WI: Isabella of France is Edward II's daughter in law rather than wife

I was thinking if Edward II married Margaret of Norway or Blanche of France, it is possible for a son of Edward II born in 1299-1302 TTL's Henry IV to marry Isabella but this would also butterfly the OTL Edward III, how would the two turn out in this scenario, would this Henry IV like Isabella..and would his son be controlled by Isabella?

Would this Henry try to claim the throne of France?
 
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