Story highlights Annegret Raunigk gave birth to three boys and one girl last week, RTL reports

The single mother already had 13 children and seven grandchildren

(CNN) For many people, 13 children would be more than enough.

But not for Annegret Raunigk.

The 65-year-old German grandmother recently gave birth to quadruplets, making her the oldest woman ever to do so.

The new arrivals increase her progeny to a total of 17 children. And let's not forget her seven grandchildren.

Raunigk, a single mother, gave birth last week to three boys and one girl after a pregnancy of just under 26 weeks, the German broadcaster RTL reported.

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