Thomas Underhill was born in 1523 and died in 1577 at the age of 54. He married Magdalen Amyns in 1549. She was born in 1532 and died in 1577 at the age of 45.

John Underhill, son of Thomas Underhill and Magdalen Amyns, was born in 1574 in Killingworth, Warwickshire, England and died in October 1608 in St. Gertrude, Bergen-Op-Zoon, Holland at the age of 34. He married Honora Pawley, daughter of James Pawley and Isabella Boynton, in 1587. She was born about 1570 and died in 1650 in Newport, RI.

Lettice Underhill, daughter of John Underhill and Honora Pawley, was born in 1590 and died on March 21, 1673 in Portsmouth, Newport Co., RI at the age of 83. She married Richard Bulgar in 1633 in Boston, Suffolk Co., MA. He was born in 1584 and died after 1687.

Petronella Underhill, daughter of John Underhill and Honora Pawley, was born in 1590 and died in 1643 at the age of 53. She married Ulrich Lupold on August 6, 1639 in New Amsterdam (New York), NY. He was born in 1587 and died in 1644 at the age of 57.

John Underhill, son of John Underhill and Honora Pawley, was born on October 7, 1597 in Baginton Over Killingworth, Warwickshire, England and died on July 21, 1672 in Killingsworth, Long Island, NY at the age of 74. He married 2 times. The first time he married Helena De Hooch on December 12, 1628 in The Hague, Holland. She was born in 1589 and died in 1633 at the age of 44. The second time he married Elizabeth Feake, daughter of Robert Feake and Elizabeth Fones, in 1659 in Flushing, Long Island, NY. She was born in 1633 in Watertown (Later Dedham), Middlesex Co., MA and died in May 1674 in Killingsworth, Long Island, NY at the age of 41.