Query on children of Charles Henry Heyward and Mary Ann McGrath

On Geni there are the following children listed that I can find no reference to them anywhere. Their last names and date-of-births make it unlikely they are the children of Charles Henry Heyward [Marine "Prince Regent" 1820] and Mary Ann Heyward

Eliza LOTT (Private) married BLANCHARD 1830
Elizabeth LOTT 1831 (Elizabeth Player - Keith)
Thomas LOTT 1832 (Thomas Heyward)
William LOTT 1834 (William H Heyward)
Emma HEYWOOD (Emma Lott - Orth)1836 married LOTT
Mary Anne LOTT 1835 (Mary Anne Andrews) married Dawson Hyland ANDREWS
Sarah LOTT 1840 (Private) married MAY
Susannah LOTT 1844 (Susannah R Davis) married DAVIS
Martha LOTT 1846 (Martha J Taylor) married TAYLOR
Rosanna Rosetta LOTT 1849 (Private) married MARTIN
Caroline LOTT 1850 (Caroline Phillips) married PHILLIPS
Charles LOTT 1852 (Private)

Gday leanne,my name is darren and i have been researching the family tree of my girlfriend susan and i can give you information on
Emma Heywood(lott-orth) as i believe you may be related if you want any information please reply