"Didn't mohammad marry a seven year old? (To his credit he waited until she was nine to consummate the marriage)..."
I looked around a bit on marriage ages in medieval Europe, and found this. Apparently it was OK back then for girls to marry at age 12. I find that strange, since I live in modern times, but apparently it was OK with the Catholic church of the day. Much has changed in terms of ages of marriage, but molestation is wrong, whatever the age.:
"The following were causes for dissolution of an already established marriage: one of the parties was not of legal age (12 for girls, 14 for boys), if the woman was incapable of sexual relations, if one was in religious orders or bound by a vow (as above), if one married a servant one had formerly had sex with; if one of the parties was not a Christian, or if there was a mistake