Claim: Alistair Petrie, the English actor who had three children, joined the National Theatre in 2005 before appearing in Marc Munden's The Mark of Cain.
Evidence: Alistair Petrie (born 30 September 1970) is an English actor. 3 In 2005, he joined the National Theatre, where he stayed for 28 months performing in His Dark Materials, Shakespeare's Henry IV alongside Sir Michael Gambon and David Edgar's Playing With Fire. In 2007 he appeared in Marc Munden's The Mark of Cain, The Whistleblowers and Cranford. 
The Mark of Cain 2007 In 2005, he joined the National Theatre, where he stayed for 28 months performing in His Dark Materials, Shakespeare's Henry IV alongside Sir Michael Gambon and David Edgar's Playing With Fire. Alistair Petrie (born 30 September 1970) is an English actor. Petrie is married to actress Lucy Scott, with whom he has three sons.