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Male Jonathan Phelps Click to view Jonathan Phelps in the family tree

Jonathan was born after 1729.1   Jonathan's father was Jonathan Phelps and his mother was Martha Loomis.  His paternal grandparents were Nathaniel Phelps and Eunice Unknown; his maternal grandparents were William Loomis and Martha Morley. He had two brothers and three sisters, named Austin, Unnamed, Martha, Margaret and Eunice.1 

1 phelps.FTW @ Tree #0105
Further sources/citations:
World Family Tree Vol. 3, Ed. 1 @ Tree #3669, 3669.ftw, World Family Tree Vol. 4, Ed. 1 @ Tree #0574, 0574.ftw, phelps.FTW @ Tree #1353