If you think having two or three kids seems exhausting, then hold onto your seat belt!
One woman, the wife of a 18th century Russian peasant named Feodor Vassilyev, gave birth to 69 children, spanning 27 pregnancies. This included 16 pairs of twins, 7 sets of triplets, and 4 sets of quadruplets.
There are various sources from the time that seem to validate the almost-unbelievable story, such as a report by the Monastery of Nikolsk that was written to Moscow in 1782.
In 1783, The Gentleman's Magazine also ran a piece on Vassilyev that outlined the prolific peasant's show of fertility:
"By his first wife:
4 x 4 = 16
7 x 3 = 21
16 x 2 = 32
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27 births 69 children
By his second wife:
6 x 2 = 12
2 x 3 = 6
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8 births 18 children
"In all, 35 births, 87 children, of which 84 are living and only three buried."