Ralph de Cromwell from Complete Peerage
Jim Weber's Phillips, Weber, Kirk, & Staggs families website
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=jweber&id=I10117

RALPH DE CROMWELL, being son and heir. of Ralph de Cromwell, of Cromwell and West Hallam (died before 28 October 1364), by Anice, daughter and coheir of Roger DE BELLERS, which last named Ralph was son and heir of Ralph de Cromwell (aged 7 in 1298/9), by Joan de la Mare, his wife, which Ralph was son and heir of another Ralph de Cromwell (died shortly before 2 March 1298/9), who was son and heir of the Ralph de Cromwell (died 1289). He acquired with his wife the estate of Tattershall, co. Lincoln, livery being granted to them 18 March 1366/7, it having been in the King's hands owing to the death of Sir John de Kirketon. He was summoned to Parliament from 28 December 1375 to 6 November 1397 by writs directed Radulfo de Crombwell' or Cromwell', whereby he is held to have become LORD CROMWELL. In 1386-87) he was a Banneret, and retained to serve the King in the event of invasion.

He married, before 20 June 1366, Maud, sister and heir of William, who died 18 December 1360, and daughter of John BERNAKE (c), of Tattershall, by Joan, daughter and eventual coheir of John MARMION [LORD MARMION]. He died 27 August 1398. His widow died 10 April 1419. [Complete Peerage III:551-2 , XIV:224, (transcribed by Dave Utzinger)]