Antigone Grey

MedLands does dentify a mother for Arthur and Antigone. clear whether they have the same mother.

Source

• Foundation for Medieval Genealogy (ANTIGONE (-after Jun 1451). Letters of legitimation were granted Jun 1451 by the French king to “Antigone fille naturelle de Humphrey duc de Gloucester et femme de Jean d´Amancier écuyer d´écurie du roi”[1131]. m firstly ([3 Jan 1435]) Sir HENRY Grey Earl of Tancarville, son of Sir JOHN Grey of Heton, Northumberland & his wife Joan Cherleton ([1418]-13 Jan 1450). m secondly JEAN d’Amancier, son of --- (-after Jun 1451).).

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http://www.thepeerage.com/p10496.htm

http://www.tudorplace.com.ar/PLANTAGENET2.htm#Antigone PLANTAGENET (C. Tankerville)

Note birthdate = before 1428 as Antigone was illegitimate

Colonial and revolutionary families of Pennsylvania; genealogical and personal memoirs. New York, NY : Lewis Historical Pub. Co., 1911.  Page 40 "Lloyd Family"