Is the below -- per John Watson, 2017 (see link) -- the most recent thought-to-be-correct FitzRandolph and Conyers connection to the St. Quintin and de Ros families (a President Obama ancestral line)? See John's blog posting on generations 5-8 (this
posting followed earlier discussions here on the topic). And was there an even more recent question about the existence and parentage of Alice de Ros? I might have missed something.

http://johnmwatson.blogspot.com/2017/06/margaret-wife-of-sir-john-conyers-of.html

(1)William I the Lion, King of Scotland, d. 1214 = Ermengarde de Beaumont
I
(2) (illegitimate by a daughter of Richard Avenal) Isabel of Scotland = Robert de Ros, Magna Carta surety
I
(3) Sir William de Ros = Lucy FitzPiers
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(4) Sir William de Ros = Eustache FitzHugh
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(5) Geoffrey de St. Quintin = Alice de Ros
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(6) Sir Thomas de St. Quintin = Margaret de Hornby
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(7) John de St. Quintin = Elizabeth de Swinhoe
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(8) Margaret de St. Quintin = John Conyers
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(9) Sir Christopher Conyers = Ellen Rolleston
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(10) Joan Conyers = Ralph Fitzrandall
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(11) John? FitzRandolph = ? (presumed but unproven)
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(12) Christopher FitzRandolph = Joan/Jane Langton
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(13) Christopher FitzRandolph = ?
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(14) Edward FitzRandolph = Frances Howes/Howis
I
(15) Edward FitzRandolph "pilgrim" = Elizabeth Blossom

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