Royce Sewalt was born in Brownwood, Texas in 1914. Royce was a calf roper, steer wrestler, team roper, and horse trainer. He was the World Champion Calf Roper in 1946 and third in the standings in steer wrestling and calf roping in 1945.
Royce invented the jerk-line to help train and keep calf roping horses work the rope. He had many winning runs in both events in Texas and at national rodeo as well training many of the world’s top calf roping horses.