Wikipedia
Gradidge
The Gradidge company was founded in 1870 by Harry Gradidge.
He was joined by his sons later on and the company became known as H. Gradidge & Son
Their two most famous golfers were Reg Whitcombe, winner of the 1938 British Open (and runner up in 1937). The second, perhaps more famous, was Bobby Locke - four-time winner of the British Open and nine-time winner of the South African Open.
Gradidge also laid claim to being used at other notable championships such as the British Amateur, the Ladies Championship, Welsh Professional Championship and many more besides. Gradidges became part of the Slazengers Sykes Gradidge and Ayres group of companies in the early/mid part of the 20th century.