William I of Württemberg
On 24 January 1816, in Saint Petersburg, he married his first cousin, Grand Duchess Catherine Pavlovna of Russia (1788–1819), daughter of Emperor Paul I of Russia (1754–1801) and Princess Sophie Dorothea of Württemberg (1759–1828). The couple had two children:
John Paul (footballer)
Paul was born in Glasgow in 1873, the son of Simon Paul and Ellen Smith. He married his wife Mary Elizabeth "May" Derbyshire in Bakewell in 1897, and at the time of the 1901 census they had one daughter, Dorothy.