MONITORIAL Le Roy - Dates do not match

Dates from that period in history tend to be ranges and approximations unless there are specific legal documents that happen to have survived the intervening millennium. Do you have any references to contribute?

To my knowledge there is only one known mention of Albert De Machi existing. There is a land transfer in Latin documents from the abbey at Cher, Bourges France. It is therefore an assumption that he is married to such a Lady or be the father of Jean Le Roy who is well docuccumented in Texts from the abbey and who at present represents the earliest member of the Le Roy lineage despite the repeated reference to De Machi ect in many genealogical sites. I would appreciate any dccumentation past Jean Le Roy

I wish I could help you, but I don't have any additional reliable information. I found one tree that links Albert de Machi to MacBeth, but with no sources or anything to document the link.
In my previous research, the LeRoy line only went from Isabelle and Zacharie Turgeon to Mathurin and Jeanne Pestel. So your information allowed me to add 10-12 generations over 4 centuries.
I understand these dates are approximate, but when something is completely impossible, I usually flag it. Either the dates are wrong, or Monitorial belongs to another generation. Without documentation, we can't determine that.

It is difficult to determine where the le roy name came from. I t seems to me to be less likely derived from Scotland more likely from viking /normand interactions with early frankish kings