Aldhelm de Mortaigne, {Fictional}

Not a known child of William, Count of Mortain, who died without issue.

Seen as child of Isabel FitzRichard, {Fictional}.

Not the father of William fitz Aldelm, Chief Justice of Ireland

Spurious Pedigree

https://www.geni.com/discussions/223151?msg=1436673

There was a William Fitz Aldelm, but never a William Fitz Aldelm de Burgh, this is a conflation of two people William Fitz Aldelm and William de Burgh, the latter died in 1205. The actual William Fitz Aldelm was not the son of Aldhelm de Mortaigne, but actually Aldelin de Aldefelde amd was born in Yorkshire.He can't have been born circa 1157 becuase he was already serving as a royal steward in 1157. I can't see any Earl of Cornwall with the name Aldhelm de Mortaigne.

Some 17th, 18 and 19th Century genealogists created a completely fictitious family tree for William and Hubert de Burgh, linking in William Fitz Aldelm, Robert of Mortain, Charlemagne et al. The whole theory was demolished by JH Round in "Feudal England" (1909), and there is a further discussion in Clarence Ellis's "Hubert de Burgh A Study in Constancy" (1952). All academic papers on the de Burgh family of Norfolk accept that the family was so minor that we can't even be confident as to who the father of William and Hubert de Burgh was.