okay hear me out, really likely gray hair guy is actually unisex, that has womb and ovaries internally but on outside displays male genitals only, for that reason he has a feminine strike (as he mentions in childhood episodes) and possibly got raped in army, causing him to discharge early and once came back on island found he was pregnant. Also possible someone found out about that from minister's side (the black hair guy that was looking for him) and found it would be a good proof to convince other islanders to join his church as he has found a god-sent person/choosen one amongst them.
then obviously gray-hair guy gave birth twice, first got taken buy church people and on second time he managed to get away while pregnant and church still found him and gave him and his daughter (it could be because 2nd child was a girl, church didn't needed her as much as firsy boy, misogyny u know) guardian - that woman doctor.
okay hear me out, really likely gray hair guy is actually unisex, that has womb and ovaries internally but on outside displays male genitals only, for that reason he has a feminine strike (as he mentions in childhood episodes) and possibly got raped in army, causing him to discharge early and once came back on island found he was pregnant. Also possible someone found out about that from minister's side (the black hair guy that was looking for him) and found it would be a good proof to convince other islanders to join his church as he has found a god-sent person/choosen one amongst them.
then obviously gray-hair guy gave birth twice, first got taken buy church people and on second time he managed to get away while pregnant and church still found him and gave him and his daughter (it could be because 2nd child was a girl, church didn't needed her as much as firsy boy, misogyny u know) guardian - that woman doctor.