William "Gipsy" Daniels (9 February 1903 – June 1967), was a Welsh Light-heavyweight boxing champion of Britain who, in an eighteen-year career, took in 141 contests, including eight fights in New York City, and notably knocked out Max Schmeling in the first round of a 1928 encounter.

On 24 February 1921, Daniels fought his first veteran boxer when he was carded to face Belgian Rene DeVos at The Ring in Blackfriars, London.

[4] Daniels continued fighting in Wales and England, but in September 1925 he travelled to mainland Europe for the first time in his career, to face Swedish boxer Harry Persson at the Cirkus in Stockholm.

Although Daniels lost the bout on points, on his return to Britain he began his most successful period of boxing, remaining undefeated for the next 18 fights.

[5] Daniels won the 20 round bout on points, but he faced a dilemma as to whether to defend the title as the National Sporting Club (NSC), who controlled boxing in Great Britain, offered far lower purses than outside promoters.