Don Leo Jonathan
Born in Brynmawr in Brecknockshire, Street's family was in the coal mining business – his father was a miner for 51 years. In his teenage years, he began bodybuilding. He left home at age 16 and began his professional wrestling career in 1957. His early inspirations were American wrestlers Lou Thesz, Buddy Rogers and Don Leo Jonathan (from whom Street adopted his first moniker, Kid Tarzan Jonathan).