Difficult to answer without additional information:
Include DATES - or approximate dates of his birth/marriage/death if you have any. Can't tell if you are looking for someone in the 1640's or 1930's!
Do you know his parents names?
Where did Ernest Degrasse live? That sometimes helps find his parents and country of origin.
Include any names that you have of his spouse, children etc.
Include a related WikiTree ID if you've seen him listed on WikiTree.
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