We can make some assumptions based around the evidence we currently have regarding Keeper family structure.
Keeper families which live together and share space are much smaller than Seeker tribes, and the birthrate of men is low. The families themselves are matriarchal and the men, while performing various trades, tend to be represented as travelers. This itself would make sense if their birthrate is as low as suggested; men traveling between families and potentially laying with the women would certainly keep the bloodlines moving. Miqo'te as a whole seem to consider polyamory the norm compared to traditional monogamy. This would certainly lead to many, many half-siblings all from the same mother, but various fathers.
That said, it's not that farfetched that some men would choose to remain and live with their mother's family and aid in child rearing or other various activities.
As an aside, I want to point out that a matriarchal society doesn't necessarily mean the men are treated poorly or lesser than the women. It just means the women are in charge and/or family lines follow the mothers; children are part of the mother's family, not the fathers.
Considering Keeper family units are meant to be smaller than Seeker tribes, as mentioned, we can probably assume leadership isn't really as much as a necessity as it is in Seeker dynamics. There would be a family matriarch, potentially the oldest woman bearing the family name. She might lead the family, or the family may be more egalitarian. We just don't really know.
Roles of children would probably follow the same pattern as other families: learning the trade of the parent(s) or other family members depending on the needs of the family.
We're shown that women tend to be close in their relationships: mothers and their daughters, sisters, cousins. Once again, we lack a lot of information here. Personally I'd find it hard to believe that sons aren't close to their mothers. They bear their mother's name quite literally and are raised in an environment where mothers supposedly plays an important role. As far as I'm concerned, most Keeper men are probably momma's boys.
Hopefully the lore booking coming out soon will give us more information on various race dynamics.
Keeper families which live together and share space are much smaller than Seeker tribes, and the birthrate of men is low. The families themselves are matriarchal and the men, while performing various trades, tend to be represented as travelers. This itself would make sense if their birthrate is as low as suggested; men traveling between families and potentially laying with the women would certainly keep the bloodlines moving. Miqo'te as a whole seem to consider polyamory the norm compared to traditional monogamy. This would certainly lead to many, many half-siblings all from the same mother, but various fathers.
That said, it's not that farfetched that some men would choose to remain and live with their mother's family and aid in child rearing or other various activities.
As an aside, I want to point out that a matriarchal society doesn't necessarily mean the men are treated poorly or lesser than the women. It just means the women are in charge and/or family lines follow the mothers; children are part of the mother's family, not the fathers.
Considering Keeper family units are meant to be smaller than Seeker tribes, as mentioned, we can probably assume leadership isn't really as much as a necessity as it is in Seeker dynamics. There would be a family matriarch, potentially the oldest woman bearing the family name. She might lead the family, or the family may be more egalitarian. We just don't really know.
Roles of children would probably follow the same pattern as other families: learning the trade of the parent(s) or other family members depending on the needs of the family.
We're shown that women tend to be close in their relationships: mothers and their daughters, sisters, cousins. Once again, we lack a lot of information here. Personally I'd find it hard to believe that sons aren't close to their mothers. They bear their mother's name quite literally and are raised in an environment where mothers supposedly plays an important role. As far as I'm concerned, most Keeper men are probably momma's boys.
Hopefully the lore booking coming out soon will give us more information on various race dynamics.