Say in the 1700 somethings, there’s a full Jewish family. Both mom and dad are Jewish. They have a daughter (Jewish), who gets married to a non Jewish man, and they have a daughter (still Jewish) who gets married to a non Jewish man and they have a daughter who has a daughter who has a daughter, who has a daughter. And said last child discovers Jewish ancestry, could she claim to be Jewish since all her Jewish ancestors were Jewish women?
Does this question make sense?
Edit: also, say the first daughter converted to Christianity and each resulting daughter followed Christianity for 300+ years.
Edit 2: Would she be eligible for law of return?