Dora was six months pregnant when the couple returned to England on 26 August 1921. Russell arranged a hasty divorce from Alys, marrying Dora six days after the divorce was finalised, on 27 September 1921. Russell's children with Dora were John Conrad Russell, 4th Earl Russell, born on 16 November 1921, and Katharine Jane Russell (now Lady Katharine Tait), born on 29 December 1923. Russell supported his family during this time by writing popular books explaining matters of physics, ethics, and education to the layman.