Patrick Minton (Menton)

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I know very little about Denis who is my 4th great grandfather. His son Patrick came to the states (Easton Massachusetts) and had a family. All I have to prove his existence is his name on Patrick's Marriage document and the Griffith's Valuation I have attached here. I'd love to know more about him. Our name is Menton but it seems in Ireland it used to be Minton?