Sir Edward Leche, MP - Sources? Smerge?

On the possibility that these are two distinct families - the Chatsworth and the Carden Leches:

"A family which assumed their surname Cawarden or Cawarthyn, from their place of abode in the county of Chester, where they had settled before the reign of Henry III, terminated in the male line about the time of Henry IV with William Cawarden, who left 4 daus, his coheirs, viz:

Isabella m to Thomas Fitton, of Cawarden
Lucy m to John Leche
Eleanor m to John Golborne
Margery m to David de Cluttone

The husband of the 2nd coheir, John Leche, who was living in the reign of Hen IV and then in possession of Lower Carden, in right of his wife, is made, by some pedigrees, a younger brother of the family of Leche of Chatsworth co Derby, “but”, says Ormerod “ there is a material variation between the higher generations of the Chatsworth Leches, as given in these pedigrees, and in abstract of deeds, from which, if correct, it appears that the family was settled in Carden as early as 20 Edward III, when Eva, widow of Hugh de Warin, releases lands in Caruthin to John Leche and Lucy, his wife, her sister, which John is said to be father of Leche, surgeon to Edward III, who, by patent (50 Edward III) was grantee of Castle Warin and other lands and was father of Daniel, the father of John Leche, to whom Jane, wife of John Preston, delivers lands in Carden 2 Henry IV and who obtained the lower Carden estate in marriage with Lucy Cawarden”
John Leche left, by Lucy de Cawarden, a son and heir John de Leche"

https://books.google.co.za/books?id=YdIKAAAAYAAJ&pg=PA702&l... Burke's Genealogical and Heraldic History of the Landed Gentry, Volume 1 A-L: London, Henry Colburn Publisher MDCCCXLVII /1847
pp 701-2

reign of Hen IV 1399 to 1413

reign of Edward III 1327 - 1377

Edward Leche/Leech/Leach MP has a biography at https://www.historyofparliamentonline.org/volume/1604-1629/member/l....
This gives his father as Robert Leche (adequately similar to Robart Leichey in the 'visitations') and mother Anne and confirms the Geni lineage is correct - and is not connected to Francis Leech of Chatsworth.
Between the history of parliament entry, Wikipedia, and the visitations of Cheshire, his family back to his great-grandfather are confirmed.

Yaay! Thank you :-)