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In page Billy Hamilton (baseball, born 1866):

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Hamilton was born on February 16, 1866[1][b] in Newark, New Jersey. His parents, Samuel and Mary Hamilton, had emigrated to New Jersey from Ireland. Biographer Roy Kerr writes that evidence suggests that Hamilton was descended from the Ulster Scots people. (As an adult, Hamilton was known to proudly proclaim his Scottish ancestry.) When Hamilton was a small child, his family moved to Clinton, Massachusetts.[2] He worked in a Clinton cotton mill as a young teenager.[3]