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Male Isaac Bumpas Click to view Isaac Bumpas in the family tree

Isaac was born on March 31st, 1642 in Marshfield, Plymouth, Massachusetts.1   Isaac's father was Edward Bumpas and his mother was Hannah Unknown.  His paternal grandparents were Thomas Bompase and Ann Bradford. He had seven brothers and five sisters, named John, Edward, Jacob, Phlilip, Thomas, Samuel, Joseph, Faith, Hannah, Mary, Sarah and Elizabeth.2 

1 phelps.FTW
2 2931.ftw
Further sources/citations:
World Family Tree Vol. 1, Ed. 1 @ Tree #0988, World Family Tree Vol. 27, Ed. 1 @ Tree #2931