Developing Theory for Matriarchs

... but can understand that if Stam is only applied to the patrilineal line then a daughter's descendants would not be of her birthname - but her father's gene pool is still carried down surely? If I carry on thinking about this I will do nothing else today!!

Yes, you're right - I was referring to the patrilineal Stam name - checking what the SV data bases use?
Prog definitely includes daughters.

I'm happy to define the Stam/ Progenitor line as being one or more generations of South African descendants.

:-)

Should leave it to the ladies - they are so clever!! Even understood what I meant to say!!

:-)

It is very tricky, isn't it? Thanks for helping to thrash this out, everyone. I think that I'm happy to leave my lady as a unqualified for any label at this stage.