Hello,
I have just found this thread via google search and am new to this site. I realise this is very old so possibly nobody will see this reply. However if anyone is still interested I saw lizb's post about Elizabeth Liffen and Samuel Howe, and their son Samuel, (Samuel John Howe b.1847). Samuel John is in fact my great-great-grandfather, with Samuel and Elizabeth being my great-great-great grandparents. I have also had an ancestry dna test and have matched to a few people via Samuel and Elizabeth. Remarkably I have also matched to one person via Elizabeth's maternal grandparents - Isaac Hacon and Sarah Bayes. I won't go into great detail about everything I know about the Howe/Liffen families in case nobody sees this, however should anyone, (particularly lizb), want to know more please send a reply and will see if I can help.
Guy