Cawthorne was born in Hong Kong in 1976, the youngest of two. His mother, Zelda,[3] was a journalist for the South China Morning Post, and his father, Russell,[4] was a Marketing Executive for the Hong Kong–based film company, Golden Harvest Studios.
Cawthorne is a first cousin of Australian Labor Minister Martin Pakula.[3]
Key: (a)= Winner of Best Performance by an Actor in a Guest Role in a Television Drama Series (b)= Best Actor in a Supporting or Guest Role in a Television Drama or Comedy