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Male Oliver Alvord Click to view Oliver Alvord in the family tree

Oliver was born on November 1st, 1767.1   Oliver's father was Benedict Alvord and his mother was Rebecca Owen.  His paternal grandparents were Benedict Alvord and Abigail Wilson; his maternal grandparents were Elijah Owen and Lydia Clark. He had a brother and three sisters, named George, Rebecca, Rosetta and Clara. He had two half-brothers and six half-sisters, named Alexander, Benedict, Abigail, Abigail, Jerusha, Lucretia, Anna and Deidamia.1 

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