Hi,
I read an article about a woman that gave birth to some 46 children (including several twins and several sets of triplets).  The article claimed that she is the world's record.  That woman is from south-America (I am not sure but I think it's Peru).  They are very poor farmers (don't know to read / write).  I read that article some 4-5 years ago at that time she was in her late 40's.  I'll try to find more detales, if I find I'll provide it.
Best regards,