I think we do not argue from the same departure point, hence some of the the problems above. To get to the same point of understanding, we must read our latest definitions in https://www.geni.com/projects/South-African-Progenitors-Matriarchs-.... Those definitions may need further revisits since it might not cover all situations we might come across
Since Im am travelling in the Northern Free State, I will deal with the questions later, but now only summarise some definitions/principles which I think we agreed/had consensus on in our last discussions:
1) SV/PROG = Stamvader/Progenitor is the (Afrikaans/English) term for the most senior male member of a family line who first arrived in a country and had descendants, regardless which country he was born or where he died. It is singular concept i.e we did not seperate SV from Progenitor therefore a male cannot be a stamvader and not a be progenitor or vice versa. (this different in the case of females)
2. SM and Progenitor, in the case of females, are two different concepts but could be vested in one female
a) SM is the wife of a stamvader(SV/PROG) and includes the possibility that she might never have arrived in South Africa.
b) Progenitor is the oldest/most senior mother of a family line to ARRIVE in South Africa.
It implies tha a second generation female can only be SM,
a first generation female can be SM and Progenitor (SM/PROG),
a first generation widowed female (with accompanying children) can only be Progenitor for her arrival family name.
Just remember that one of the purposes developing a female progenitor concept was to honour a female who arrived alone with children in a country.
These concepts are by no means final and any new perspectives are welcome.
If for instance we say for instance it is unthinkable that any third generation person does not have a SM, what do we say in terms of SM in the case of a widowed mother whose accompanying daughter has a child from an unknown father?