dv said:

There’s been a third death in the family, one of my father’s brothers. I didn’t like him, and it would be fair to say I don’t have a single positive memory of him but do have negative ones, so I won’t make any show of grief nor attend the funeral. OTOH there are some decent people who will miss him so I’ll politely offer them condolences.

That sounds a bit awkward and unpleasant.
Did he live locally. or would the funeral involve flying interstate or overseas?