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Family:
Marriage:
Bibliography
  1. Richardson, Douglas, Royal Ancestry. Salt Lake City, Utah: Douglas Richardson, 2013. NYPL JFF 16-1184 v1-5 Information from this source tagged as [Ref: Richardson RoyalAnc v1[pc][0-9]*].
  2. Richardson, Douglas, Royal Ancestry. Salt Lake City, Utah: Douglas Richardson, 2013. NYPL JFF 16-1184 v1-5 Information from this source tagged as [Ref: Richardson RoyalAnc v2p[0-9]*].

Sources for death Information
date:
abt 1265 [Ref: Richardson RoyalAnc v1p589, Richardson RoyalAnc v2p281]
Sources with Information about marriage to Constantia De MERSTON
date:
first marriage of Constantia [Ref: Richardson RoyalAnc v1p589, Richardson RoyalAnc v2p281]
Research Notes:
of Marston (in Marston Moretaine), Bedfordshire [Ref: Richardson RoyalAnc v2p281]



Pedigree of John De MORTEYN
John De MORTEYN



Descendants of John De MORTEYN
1. John De MORTEYN m. Constantia De MERSTON
m. Constantia De MERSTON father: Ralph De MERSTON