So Daan Botes this would be the solution to your previous post:
=1. Ouma Wiese is PM on her sons' offspring.
2. I must still clear what role she have on any of her daughters' offspring.
3. Ouma Wiese is not necessarily PM because she is the oldest Wiese family member, but because she is older than her sons who will get a patriarch status ans she as family head not - just because her phisiology differ from a male.
4. If Ouma Wiese had not come, but only her two sons an a younger daughter, then I do not see that the Wiese daughter, being the oldest female of the Wiese deserve any status in the Wiese family - she can only(conditionably) be a PM in her future husbands' offspring.
5. If the Wiese daughter's husband's mother is a PM, we have a conflicting node, where I would favour her mother in law to have precedence because
was the oldest female member and had offspring and the daughter not.
So generally it seems that in conflict, the PM of the male line has precedence =
1.2.3 – Ouma Wises is SM/PROG on all her grandchildren because she’s the oldest Wiese mother to arrive in the country. (The same as Oupa Wiese would have been, together with her, if he’d come with her.)
instead, her son is SV/PROG because he’s the oldest Wiese father to arrive in the country.
4. If Ouma Wiese’s daughter had been the oldest Wiese born mother to arrive, then she would have been the SM/PROG for exactly the same reasons her brother was the SV/PROG. But, as her mother came out with her, she is superseded by her mother as SM/PROG.
(If her future husband is an SV – then she is likely to be called the ‘M’ Matriach of his line, but that is a separate category).
5. The conflicting node that you envisage “if the Wiese daughter's husband's mother is a PM’ is the result of a categorical error that doesn’t distinguish between birth Progenitor, and marriage (cultural) Matriarch.
Once we acknowledge they’re incompatible categories, the problem falls away: The Wiese daughter is only SM/PROG if she is the oldest born Wiese mother. (In this instance, she’s not). Her mother-in-law is SM/PROG by virtue of being the oldest born mother of that line.
Whether or not the Wiese daughter is the cultural Matriarch by marriage of her husband’s line is a completely separate category of question, that does not affect the SM/PROG delineator on her birth line.