Sir Thomas Isaac

Thomas de Isaac was the son-in-law (not the son) of Robert the Bruce, King of Scotland.

https://fmg.ac/Projects/MedLands/SCOTLAND.htm#_Toc65391150

Mentioned in MedLands only as the husband of Matilda, Robert the Bruce's daughter. Matilda is described as having two daughters: Joanna and Catherine. No mention is made of sons.

Parental information can be found here:
https://www.myheritage.com/research/record-1-194408931-1-512337/tho...

SOURCE BELOW: WIKITREE
Thomas (Isaac) de Isaac married Matilda Bruce (bef 16 Oct 1321 - 20 Jul 1353) bef 1345 and is the father of 2 children and the grandfather of 2 grandchildren. Listed below are details on up to five generations of descendants. Also see Thomas's DNA Descendants and Tree Apps for more views.

Catherine Isaac ancestors (abt 1337)
Joanna (Isaac) MacDougall ancestors descendants (abt 1337 - bef 08 Nov 1399) m. Eoin Ergadia (abt 1335 - bef Sep 1372) bef 1362. m. Malcolm Fleming (1312 - abt 1395) aft 29 Sep 1372.
Janet MacDougall ancestors descendants (abt 1363 - abt 1400) m. Robert Stewart (1352 - 21 Jul 1403) on 13 Apr 1378.
John Stewart ancestors descendants (abt 1370) m. Margaret De Craigie (abt 1370).
John Stewart ancestors descendants (abt 1395)
Alexander Stewart ancestors descendants more descendants (abt 1430)
William (Stewart) Stewart of Kirkandris ancestors (abt 1376 - aft 1431)
[uncertain] Elizabeth (Stewart) Stewart Lady Drumlanrig ancestors descendants (1378) m. William Douglas (1373 - abt 1421) on 1392. m. Michael Mercer (abt 1379 - abt 1439) on 12 Jun 1402.
William (Douglas) Douglas IInd of Drumlanrig ancestors descendants (bef 1395 - bef 1458) m. Jane Maxwell (1395 - 1458).
Unknown Douglas ancestors descendants more descendants (1417 - 1460)
William (Douglas) Douglas IIIrd of Drumlanrig ancestors descendants more descendants (1440 - 1464)
[uncertain] Andrew Mercer ancestors descendants (1404 - 1473) m. Margaret Drummond (abt 1437 - aft 26 Mar 1482).
Lawrence Mercer ancestors descendants more descendants (abt 1454 - 22 Mar 1501)
Christian Mercer ancestors descendants more descendants (1463 - 1490)
Marion (Douglas) de Chisholm ancestors descendants (abt 1405) m. Robert Chisholm (abt 1390).
Edmund (Chisholm) Chisholm Ist of Cromlix ancestors descendants more descendants (1453 - 1500)
Robert Mercer ancestors descendants (abt 1410)
Robert Mercer ancestors descendants more descendants (abt 1440 - 1505)
David Stewart ancestors descendants (abt 1388 - 10 Apr 1444) m. Margaret Dundas (abt 1394 - abt 1486).
Henry Stewart ancestors descendants (abt 1414 - aft 1458) m. Marion Ogilvie (abt 1438) on 1458.
David (Stewart) Stewart IIIrd Laird of Rosyth ancestors descendants more descendants (abt 1444 - abt 1483)
William Stewart ancestors descendants more descendants (abt 1450 - 09 Sep 1513)
Elizabeth Stewart ancestors descendants (1433 - 20 Oct 1474) m. John Bruce (1420 - abt 1473).
David (Bruce) Bruce VIth of Clackmannan ancestors descendants more descendants (1445 - abt 1506)
Matilda (Bruce) Marshall ancestors descendants more descendants (1449 - aft 1472)
Robert (Bruce) Bruce of Cultmalundy ancestors descendants more descendants (abt 1455 - 1508)
Isabel (MacDougall) Stewart ancestors descendants (abt 1364 - 21 Dec 1439) m. John Stewart (abt 1348 - 26 Apr 1421) abt 1386.
Isabel (Stewart) Murray ancestors descendants ( - 26 Oct 1460) m. David Murray (1359 - 1446). m. William Oliphant (1379 - aft 03 Dec 1425).
Katherine Murray ancestors descendants () m. Malcolm Moncreiffe (abt 1404 - abt 1465).
John Moncrieff ancestors descendants more descendants (abt 1429 - 26 Oct 1475)
David (Murray) Murray VIIth of Tullibardine ancestors descendants (1400 - bef 15 Jun 1452) m. Margaret Colquhoun (bef 1419 - aft 1454) bef 1430.
Christian (Murray) Menteith ancestors descendants more descendants (bef 1406)
Alexander Murray ancestors (aft 1430)
Andrew Murray ancestors (aft 1430)
Isabel Murray ancestors (aft 1430)
James Murray ancestors descendants more descendants (aft 1430 - 1480)
John Murray ancestors (aft 1430 - bef 08 May 1499)
Marion Murray ancestors (aft 1430)
Patrick Murray ancestors (aft 1430)
Robert Murray ancestors (aft 1430 - bef 15 Jun 1452)
Thomas Murray ancestors (aft 1430)
Walter Murray ancestors (aft 1430)
William (Murray) Murray VIIIth of Tullibardine ancestors descendants more descendants (1432 - abt 1459)
Mariot (Murray) Drummond ancestors descendants (1411 - 14 Jul 1445) m. Malcolm Drummond (14 Jul 1416 - abt 1470) on 1445.
John (Drummond) Drummond Ist Lord Drummond ancestors descendants more descendants (abt 1438 - 18 Dec 1519)
James Drummond ancestors descendants more descendants (1440)
Margaret Drummond ancestors (abt 1442)
Walter Drummond ancestors descendants more descendants (abt 1450)
Thomas Drummond ancestors descendants more descendants (abt 1453)
Elena Murray ancestors (1412 - abt 1458) m. Malcolm Moncreiffe (abt 1404 - abt 1465) on 1415.
John Murray ancestors (abt 1412)
Thomas Murray ancestors (abt 1414)
Alexander Murray ancestors (abt 1416)
James Murray ancestors (abt 1418)
Patrick (Murray) Murray Ist of Ochtertyre and Dollery ancestors descendants (1422 - 1476) m. Katherine Balfour (1425).
Isabella (Murray) Hoppringle ancestors descendants more descendants (1444)
William Murray ancestors (abt 1448)
David Murray ancestors descendants more descendants (1460 - 04 Feb 1509)
Andrew Murray ancestors (abt 1426)
Anthony Murray ancestors (abt 1428)
William Murray ancestors (abt 1430)
Isobel Murray ancestors (abt 1432)
Robert Murray ancestors (abt 1434)
Christian (Stuart) Stewart Lady Dundas ancestors descendants ( - bef Nov 1451) m. James Dundas (abt 1350 - abt 1430) abt 1400.
Janet (Dundas) Dundas Lady Callendar ancestors descendants (abt 1389 - 1459) m. Alexander Livingston (bef 1375 - bef 06 Nov 1451) on 1400.
Janet (Livingston) Livingston Lady Airth ancestors descendants more descendants (abt 1399 - 1457)
Helen (Livingston) Menteith ancestors descendants more descendants (1400 - aft 1446)
Joan (Livingston) Sibbald ancestors descendants more descendants (abt 1405)
Alexander (Livingston) Livingstone ancestors descendants more descendants (1410 - 22 Jan 1450)
Elizabeth Livingston ancestors (abt 1410)
Eupham Livingston ancestors descendants more descendants (abt 1410 - aft 1451)
James (Livingston) Livingston First Lord Livingston of Callendar ancestors descendants more descendants (abt 1410 - abt Jun 1467)
Margaret (Dundas) Stewart ancestors descendants (abt 1394 - abt 1486) m. David Stewart (abt 1388 - 10 Apr 1444).
Henry Stewart ancestors (abt 1414 - aft 1458) [Stewart-16647 has already appeared on this list; see descendants above]
Elizabeth Stewart ancestors (1433 - 20 Oct 1474) [Stewart-2289 has already appeared on this list; see descendants above]
Alexander (Dundas) Dundas Ist of Fingask ancestors descendants (abt 1410 - 1451) m. Eupham Livingston (abt 1410 - aft 1451) on 1451.
Alexander (Dundas) Dundas IInd of Fingask ancestors descendants more descendants (bef 1451 - 09 Sep 1513)
Christian (Dundas) Sandilands ancestors descendants (abt 1413 - 1459) m. John Sandilands (abt 1411 - abt 1439).
James Sandilands ancestors descendants more descendants (abt 1433 - bef 1505)
Robert (Stewart) Stewart First Lord Lorn ancestors descendants (abt 1387 - 1449) m. Johanna Margaret Stewart (1375 - 1439) bef 1409.
John Stewart ancestors descendants (abt 1400 - 20 Dec 1463) m. Agnes MacDonald (1415 - 1442). m. Florence MacDonald (1449 - 1463). m. Unknown MacLaren (1440 - 1463) on 20 Dec 1463.
Janet Stewart ancestors descendants more descendants (1430 - 24 Sep 1489)
Elizabeth (Stewart) Campbell ancestors descendants more descendants (abt 1435 - 26 Oct 1510)
Dugald Stewart ancestors descendants more descendants (1448 - abt 1498)
Margaret (Stewart) Macdougall ancestors descendants (abt 1400 - aft 1440) m. Alan MacDougall (abt 1398 - aft 1440) on 1440.
Ian Macdougall ancestors descendants more descendants (bef 1430 - 1480)
Walter (Stewart) Stewart First Lord Innermeath ancestors descendants (05 May 1402 - bef 1488) m. Margaret Lindsay (1436 - 06 Feb 1482) bef 1461.
Thomas (Stewart) Stewart Second Lord Innermeath ancestors descendants more descendants (abt 1461 - 09 Sep 1513)
Alan Stewart ancestors (1404)
David Stewart ancestors (1406)
Robert (Stewart) Stewart Ist Laird of Laithers ancestors descendants (abt 1410 - abt 1470) m. Janet Kennedy (1427 - 1498) abt 1445.
Patrick (Stuart) Stuart IInd Laird of Laithers ancestors descendants more descendants (abt 1447 - abt 1507)
Robert Stewart ancestors (1449 - aft 1507)
Margaret (Stewart) Forbes ancestors descendants more descendants (abt 1450 - abt 1495)
Lindsay Stewart ancestors (1415)
Agnes Stewart ancestors descendants (abt 1416 - 1477) m. John Lindsay (abt 1400 - 06 Feb 1482).
Elizabeth (Lindsay) Lundie ancestors descendants more descendants (abt 21 Jan 1424 - 1490)
Christian (Lindsay) Cunninghame ancestors descendants more descendants (aft 1430 - bef 11 Mar 1496)
Margaret Lindsay ancestors descendants more descendants (1436 - 06 Feb 1482)
David Lindsay ancestors (abt 1438 - 1490) [no children]
Patrick (Lindsay) Lindsay Fourth Lord Lindsay of the Byres ancestors descendants more descendants (abt 1439 - 08 Mar 1526)
Mariot (Lindsay) Hay ancestors descendants more descendants (abt 1444)
Catherine Lindsay ancestors descendants more descendants (abt 1450)
George Lindsay ancestors (abt 1450 - abt 1500)
John (Lindsay) Lindsay Third Lord Lindsay of the Byres ancestors descendants more descendants (abt 1450 - abt 1498)
Archibald Stewart ancestors (1388)
James (Stewart) Stewart Black Knight of Lorn ancestors descendants (abt 1395 - aft 17 Aug 1451) m. Joan Beaufort ( - abt 15 Jul 1445) bef 21 Sep 1439.
John (Stewart) Stewart of Balveny First Earl of Atholl ancestors descendants (abt 1440 - 15 Sep 1512) m. Margaret Douglas (abt 1430 - abt 1475) bef Mar 1460. m. Eleanor Sinclair (abt 19 Apr 1457 - 21 Mar 1519) bef 19 Apr 1475.
Elizabeth (Stewart) Stewart Lady Gray ancestors descendants more descendants (aft 1460)
Joanna (Stewart) Gordon ancestors descendants more descendants (1461 - 27 Oct 1510)
Christian Stewart ancestors descendants more descendants (abt 1473 - abt 30 May 1538)
Katherine Stewart ancestors descendants more descendants (abt 1473 - abt 1515)
Elspeth (Stewart) Innes ancestors descendants more descendants (1474 - 1564)
John (Stewart) Stewart Second Earl of Atholl ancestors descendants more descendants (aft 1475 - abt 1521)
Margaret (Stewart) Stewart Lady Strowan ancestors descendants more descendants (aft 1475 - aft 1490)
Elizabeth (Stewart) Ross ancestors descendants more descendants (aft 1476)
Elizabeth (Stewart) Stewart Lady Strowan ancestors descendants more descendants (abt 1480)
Jean Stewart ancestors descendants more descendants (abt 1481 - 1550)
Andrew Stewart ancestors (abt 1485 - 1542)
Margaret Stewart ancestors descendants more descendants (1487 - 26 Jul 1524)
Jean (Stewart) Stewart Lady Arbuthnot ancestors descendants more descendants (abt 1489 - abt 19 Apr 1522)
Mariote Stewart ancestors descendants more descendants (abt 1490 - abt 26 Jul 1529)
James (Stewart) Stewart Ist Earl of Buchan ancestors descendants (abt 1442 - abt 1499) m. Margaret Ogilvy (abt 1441 - aft 1475) on 27 Mar 1459.
Alexander Stewart ancestors descendants more descendants (aft 1459 - 1505)
Agnes (Stewart) Stewart Dowager Countess of Bothwell ancestors descendants more descendants (abt 1469 - 20 Feb 1557)
Isabelle Margaret (Stewart) Stewart Dowager Lady Saltoun ancestors descendants more descendants (abt 1470 - 1530)
James (Stewart) Stewart Ist of Traquair ancestors descendants more descendants (abt 1480 - 09 Sep 1513)
Margaret (Stewart) Stewart Lady Abergeldie ancestors descendants more descendants (abt 1484)
Elizabeth (Stewart) Home ancestors descendants more descendants (abt 1486 - aft 1513)
Andrew (Stewart) Stewart Bishop of Moray ancestors (1443 - 29 Sep 1501)
Alexander (Stewart) Steuart ancestors descendants (abt 1396 - bef 10 Jul 1449) m. Margaret Hay (abt 1380).
Thomas Steuart ancestors descendants (abt 1405 - abt 1462) m. Maud Stewart (abt 1410).
Alexander Steuart ancestors descendants more descendants (abt 1430 - 1488)
Jean Stewart ancestors descendants (1396 - 1420) m. David Bruce (abt 1392 - 22 May 1422) abt 1410.
John (Bruce) Bruce Vth of Clackmannan ancestors descendants (1420 - abt 1473) m. Elizabeth Stewart (1433 - 20 Oct 1474).
David (Bruce) Bruce VIth of Clackmannan ancestors (1445 - abt 1506) [Bruce-389 has already appeared on this list; see descendants above]
Matilda (Bruce) Marshall ancestors (1449 - aft 1472) [Bruce-4446 has already appeared on this list; see descendants above]
Robert (Bruce) Bruce of Cultmalundy ancestors (abt 1455 - 1508) [Bruce-2679 has already appeared on this list; see descendants above]
Sir Thomas de Isaac formerly Isaac
Born [date unknown] in Dunfermline, Fifeshire, Scotlandmap
Son of [father unknown] and [mother unknown]
[sibling%28s%29 unknown]
Husband of Matilda Bruce — married before 1345 [location unknown]
HIDE DESCENDANTS
Father of Catherine Isaac and Joanna (Isaac) MacDougall
Died after Nov 1364 in Scotlandmap
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Isaac-26 created 24 May 2011 | Last modified 11 Dec 2022
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Medieval Scotland
Thomas (Isaac) de Isaac was an inhabitant of Medieval Scotland.
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Biography
Thomas was Town Clerk of Aberdeen. (unsourced)

Thomas Isaac is a very shadowy person. His existence and connections is shown by numerous contemporary statements including marriage dispensations for his descendants q.v. .

Sources

Douglas Richardson, "Royal Ancestry", 2013, Vol. 5 p. 39 gives his marriage as occurring between June 1342 and before 1345 and quotes a contemporary Exchequer Roll stating the names of him and his wife, sister of King David.

James Balfour Paul, "Scots Peerage" Vol. 1, p. 8 lists him as spouse of Matilda Bruce, daughter of King Robert I.
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