Ewing was born in Manly and grew up in Forestville near Sydney, Australia and is the eldest of four children. He attended Marist College North 支撑, 海岸 where he performed in 音乐剧 years throughout high school. He is the first ever professional actor in his family and trained with John Gibson in Sydney's North Shore. Ewing has two 纹身 on his right arm. The first is a Southern 交叉, 十字架 as a mark of respect to his ancestors who fought in two World Wars. The 秒 says Carpe Diem, which directly translates as "Seize the Day". Ewing's interpretation is "Have a crack".