John Thomas Ball (1815–1898), Irish barrister and politician, Member of Parliament (MP) for Dublin University 1868–1875
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Jack Ball (John Thomas Ball, 1907–1976), English footballer
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Johnny Ball (born 1938), English children's television presenter
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He was a member of the party which made the first ascent of Monte Rosa in 1855 and, in 1857, a founder member of the Alpine Club, having been a friend of its first president, John Ball, at Cambridge.