University of Hull @ http://www.dcs.hull.ac.uk/cgi-bin/gedlkup/n=royal?royal10438
(Ref: http://www.dcs.hull.ac.uk/cgi-bin/gedlkup/n=royal?royal10438) The author/originator was Brian C. Tompsett.
Source Notes
Source Medium: Electronic
References (2)
Parent Source:
University of Hull
Individual:
Constança of Aragon