From several family trees on ancestry: Sarah's parents were John Davenport and Ann Turner.
there were no parents listed for John, but Ann Turner's was a long one:
John and Ann had 10 children: Mary Ann, Emma, Joseph, Elizabeth Ellen, Sarah, John, William, Thomas, Martha Jane, James Henry.
Her (Ann Turner) parents were: Joseph Turner 1773 and Elizabeth Jackson 1775. they had 8 children. Elizabeth, Joseph, William, Betty, Mary, Martha, Ann and James.
Joseph Turner's parents were James 1750 and Peggy Sanders 1750. they had 4 children: Joseph, Lazarus,Elizabeth and Mark.
James's parents: Lazarus Turner 1712 and Abigail Booth 1707 and they had 9 children: John, Mark, Peer, Luke, James, Abigail, Lazarus, Johnathan, and James.
Lazarus's parents: Lucie Turner 1692 (listed as father) and no known Mother born in 1692. they had 3 children: Lazarus, Edwardus and Elizabetha.
On another family tree they did have John Davenport's side: this tree though says that John's father was George Davenort 1785 with no spouse listed. (George did have another wife though: Sarah Price and they married Jan 18, 1807). Since George's son John was born in 1803, Sarah must have been his step Mother).
AND that George's father was John Davenort 1762 and Alice Barry 1762 and they married Aug 17, 1784.
John's of 1762 parents are: Edmund Davenport 1684 and Elizabeth heywood 1698. they married Aug, 30, 1719.
Edmund's parents were: John Davenport 1662 but no Mother mentioned.