In December 2009, Tennant, then aged 83, learned that he was also father to London psychotherapist Joshua Bowler. Bowler's mother, the artists' model and bohemian Henrietta Moraes, had become pregnant following a weekend spent with Tennant after the New Year's Eve 1954 Chelsea Arts Club Ball. However, she never told Tennant about the pregnancy, and married the actor Norman Bowler seven months later; the couple divorced two and a half years after that. After Moraes' death in 1999, Joshua Bowler decided to investigate his parentage and wrote to Tennant after a mutual friend recalled seeing the young Tennant and Moraes leave the 1954 ball together. A paternity test revealed that Tennant was indeed Bowler's father, news that Tennant looked upon as "quite magical."