According to Russian records, how many children did Feodor and Valentina Vassilyeva have?

Feodor Vassilyev (c.1707-1782) was a peasant from Shuya, Russia. His first wife is said to have lived to be 76, and between 1725 and 1765, have had 69 children (16 pairs of twins, 7 sets of triplets, and 4 sets of quadruplets); 67 of them survived infancy with the loss of one set of twins: the record for most children born to a single woman. However, their names, dates of birth, and dates of death are all unknown.