David Tennant (born David John McDonald on 18 April 1971) is a Scottish actor. In addition to his work in theatre, including a widely praised Hamlet, Tennant is best known for his role as the tenth incarnation of the Doctor in Doctor Who, along with the title role in the 2005 TV serial Casanova and as Barty Crouch, Jr. in the 2005 film adaptation, Harry Potter and the Goblet of Fire.
Tennant was born in Bathgate, West Lothian and grew up with his brother Blair and sister Karen in Ralston, Renfrewshire, where his father Alexander was the local Church of Scotland minister. Tennant's maternal great-grandparents, William and Agnes Blair, were staunch Protestants from Derry in Northern Ireland and among the signatories of the Ulster Covenant; William was a member of the Grand Orange Lodge of Ireland. Tennant's maternal grandfather, footballer Archie McLeod, met William and Agnes' daughter Nellie while playing for Derry City.
Tennant was educated at Ralston Primary and Paisley Grammar School where he enjoyed a fruitful relationship with English language teacher Moira Robertson, who was among the first to recognise his potential. He acted in school productions throughout primary and secondary school (his talent at this young age was spotted by actress Edith MacArthur, who after seeing his first role aged 11, told his parents she predicted he would become a successful stage actor). He also attended Saturday classes at the Royal Scottish Academy of Music and Drama. At 16 he passed an audition for the Royal Scottish Academy of Music and Drama, one of their youngest students, and studied there between the ages of 17-20. He earned a bachelor's degree and was flatmates with friend Louise Delamere.