Sam Reid
Place of Birth: New South Wales, Australia
Date of Birth: 19 February, 1987
Ethnicity: Irish, likely Scottish, possibly other
Sam Reid, also credited as Sebastian Reid, is an Australian actor. His roles include the series Hatfields & McCoys, The Astronaut Wives Club, Prime Suspect 1973, Lambs of God, The Newsreader, and Interview with the Vampire, and the films Anonymous, The Railway Man, Belle, ’71, The Riot Club, Serena, Despite the Falling Snow, The Limehouse Golem, 2:22, Standing Up for Sunny, and The Drover’s Wife.
He is a brother of actor Rupert Reid and producer Kali Reid. His father is a cattle farmer. His mother’s family is Irish.
Source: https://www.irishtimes.com
Reid is definitely not an English surname.
Most Reids are Scottish, or Irish.