Peter III of Russia
Empress Elizabeth arranged for Peter to marry his second cousin, Sophia Augusta Frederica (later Catherine the Great), daughter of Christian August, Prince of Anhalt-Zerbst and Johanna Elisabeth of Holstein-Gottorp. The young princess formally converted to Russian Orthodoxy and took the name Ekaterina Alexeievna (i.e., Catherine). They married on 21 August 1745. The marriage was not a happy one but produced one son, the future Emperor Paul, and one daughter, Anna Petrovna (20 December 1757 – 19 March 1759). Catherine later claimed that Paul was not fathered by Peter: that, in fact, they had never consummated the marriage. During the sixteen years of their residence in Oranienbaum, Catherine took numerous lovers, while her husband did the same in the beginning.
Peter the Great
By his two wives, he had fourteen children. These included three sons named "Pavel" and three sons named "Peter", all of whom died in infancy.
In the winter of 1723, Peter, whose overall health was never robust, began having problems with his urinary tract and bladder. In the summer of 1724 a team of doctors performed surgery releasing upwards of four pounds of blocked urine. Peter remained bedridden until late autumn. In the first week of October, restless and certain he was cured, Peter began a lengthy inspection tour of various projects. According to legend, in November, at Lakhta along the Finnish Gulf to inspect some ironworks, Peter saw a group of soldiers drowning near shore and, wading out into near-waist deep water, came to their rescue.