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Male James Rockwell Click to view James Rockwell in the family tree

James was born after 1728.1   James' father was James Rockwell and his mother was Abigail Loomis.  His paternal grandfather was Joseph Rockwell; his maternal grandparents were Ebenezer Loomis and Jemima Whitcomb. He had three brothers and four sisters, named Ebenezer, William, Nathaniel, Abigail, Elizabeth, Sybil and Lucy.  He was the oldest of the eight children.1 

1 phelps.FTW @ Tree #0105
Further sources/citations:
World Family Tree Vol. 3, Ed. 1 @ Tree #3669, 3669.ftw