"I suppose a lot were raped b/c the Jewish line is matrilineal to account for rape. ..."
Ahhhh... NO!
The "Jewish" line wasn't matrilineal - not during biblical times, at least... I suspect they dropped the matriarchal lineages after the Israelites stopped worshipping goddesses and began worshipping male gods... You know, "El", "Yahweh"...
Are you perhaps referring to Mary's patrilineal line as described in the New Testament???
Also, when one considers the sometimes fatal punishments for certain types of victims of rape in the Old Testament, it would not appear that the Israelites were very concerned about tracing the lineage of a rape victim's offspring - most were apparently cut off by their rape-victim-mother's execution...
Zid