John,
I did more searching through my records after these posts and located this particular Ralph in my database under 'Ralph Arden of Hanwell.' I have him born c 1272 and son of Sir Thomas Arden of Drayton and Rose Vernon. He married Alice de Beauchamp, daughter of Sir John de Beauchamp and Cecily de Vivonne. She was born after 1276.
Son of Ralph and Alice was Ralph Arden 'of Park Hall' who married Isabel de Bromwich.
Source for all of this is Jim Weber; he cites VCH - Oxford:. URL:
http://www.british-history.ac.uk
With that said, I'm not sure what's on Wikitree is correct. I have two separate 'Arden' groups -- one is from Sussex and is d'Arderne, while the other is Arden and was in Oxfordshire. If this is correct, the Ralph d'Arderne whom this posts is concerning (Arderne-30) is mislabeled with parents...
The Sir Thomas Arden of Drayton I mentioned above (who married Rose Vernon) I have as son of William Arden of Radbourne, son of Thomas Arden of Drayton, son of William Arden, son of Henry Arden, son of Suvardus de Arden, son of Turchill de Warwick of Kingsbury.
The Ardernes that people have on Wikitree show no sources, so I wouldn't give much weight to them...
Darlene