1.
Richard Warren of the Mayflower born abt 1580 (possibly Herfordshire) died in 1628, not Oct 1683. That was his wife's death date.
His parents are NOT known.
He married Elizabeth Walker.
http://www.craigrich.net/TAG_Warren.pdf
2.
Richard Warren, the son of Christopher Warren and Alice Webb was baptized 15 August 1619, Sydenham Damrell, Devonshire, England. He married the widow of Francis Marsh in year UNKNOWN. Elizabet Ivatt/Jouatt and Francis March/Marsh were married in 1629. She was 15 years old. That was the year after Richard of the Mayflower had died.
"Christopher Warren married Alice Webb, 15 June, 1613. . . . Richard, the 3rd son of Christopher Warren, was baptized at Sydenham Damrell, [Devonshire, England] 15 August 1619, and was five years younger than his wife, Mrs. Elizabeth March, who was not licensed to marry her first husband until 1629.. . ."
See:
http://tinyurl.com/Warren-not-Ivatt
Search for Christopher Warren's marriage record from 1613. under wife's spelling "Alyce Webbe" Sydenham Damerel, Devonshire, England. Neither of them died 1587. Those dates were invented to force-fit them into the Mayflower myth.
http://tinyurl.com/AlyseWebbe-RichWarren
THEIR son Richard's baptism 15 August 1619 here
http://tinyurl.com/RichWarren-1619-NOT-Mayflower