I once met a women at mother and baby club and she was having her 12-17th(6 babies) about 4 years ago(when i was having my first) and she was 38 and has had 5 more since so i think she said she had her first when she was 17-18 and the oldest is around 23-24.

Names in order:
1.Micheal - 21
2-3.Lily&Shawna -19
4.Harry - 17
5-8.William&Eric&Nick&Josh - 16
9.Willow - 15
10.Shawna - 13
11.Cara&Milo - 10
12-17.Daniel&Carlos&Marie&Laurie&Miley&Katie- 7
18.Farrel - 5
19.Sarah - 3
20.Naomi - 2
21.Zoe&Tommy - 7 months

So she has a big family yeah and her and her husband had been together since she had micheal