@Whambamthankyoumam111 q
Should he not think that it is a lovely name that at one time belonged to a lovely person? If you feel that you are competing with a dead woman, that is s competition that you will never. She will be forever young and vibrant in his memory. Most people tend to remember the best times spent with the dead loved one and overlook their faults or failings, that is normal.
If you are a strong woman, you can be aware of all of that and have a good relationship still. She had the name, but she did not own the name. Maybe giving his child that name (but it would have to be a particularly lovely name) is a way for him to honor the memory and at the same time exorcise the ghost.
Is it a name that a little girl would like to have?
If you don't want to consider that name , that is ok as well. In your place , what I would not want to do is come across as someone who is jealous of a dead woman. That won't be a good look .
Talk to him about your feelings, but also listen to his feelings. Remember, his feelings matter as much as your feelings.
Maybe you can compromise by using that name as a middle name. Not many kids are addressed by their middle name.