I don't find any reference to most of these individuals in the cited source, not to Clavering, not to Porhoet, not to Zouche. Even were it found in the cited source, this genealogical trivia would still violate WP:NOTGENEALOGY (we don't even think this is noteworthy for his father, who is one generation closer to this royal connection), but it does not appear too be in the cited source, and as far as I can tell, it is incorrect - Geoffrey of Porhoet was son of Eudes of Porhoet by Anna of Leon, and though Eudes late in life remarried to Bertha (not her sister Constance) of Brittany, there was no genealogical descent here. So, being trivi is reason enough to delete it, but it isn't even reality. Agricolae (talk) 22:46, 9 December 2017 (UTC)Reply
- and I should add, given how broadly I had to search to confirm this, it is clearly giving the connection WP:UNDUE weight too include it anyhow. Agricolae (talk) 22:49, 9 December 2017 (UTC)Reply