Butterfield, Asa, 1997- (Personal Name)

The boy in the striped pajamas, 2009: credits (cast, Asa Butterfield)

IMDb via WWW, Mar. 16, 2009 (Asa Butterfield; b. 1997, Islington, London, England, UK)

Wikipedia, 21 April 2014 (Asa Maxwell Thornton Farr Butterfield (born 1 April 1997 in Islington, London) is an English actor)