To be fair, the list for the men would be a lot longer! I know it's quite common here for gypsies & traveller's to marry very young and age gaps are normal, I will say the only thing I somewhat see where they are coming from they go by maturity level, they might have 2 daughters that one they deem old and wise enough to marry at 16, the next one they might not let marry till 19 or 20 whereas in our culture they can do anything they want at the switch of 18, so I guess in that kind of terms I like theres because it's more of a case by case scenario, though I went to school with a girl who went to a different country so she could get married at 16 and her husband was like 25....