Four profiles of Conrad I count of Luxembourg:
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This is the father of Henry III count of Luxembourg:
https://www.geni.com/people/Conrad-I-Count-of-Luxembourg/6000000002043214614
This is the son of Henry III count of Luxembourg:
This is the son of Henry III count of Luxembourg:
This is the son of Henry III count of Luxembourg:
But all four of these profiles are of Conrad I count of Luxembourg who died in 1086 (the date of the last is not specified)
Some merging is called for, since all four profiles have different authors.