Question: What nickname was shared by Patrick Cotter O'Brien and Charles Byrne?
Sentence (from "Patrick Cotter (croquet player)"): Cotter was one of the most successful croquet players in the 1950s and 1960s winning the President’s Cup six times (1949, 1950, 1952, 1953, 1956 and 1960), the Open Championship three times (1955, 1958 and 1962) and the Men's Championship four times (1952, 1954, 1963 and 1969).
Relevant evidence: No