findagrave.com has several with that surname.
I also looked on ancestry, familysearch.org and legacy for obits. It could be a name spelling change also.
NY might have a death index but birth certificates can only be given to someone listed on the birth certificate without some kind of legal document. I am not sure if those same rules apply to a death certificate. One of my children were born in NY and I found out when I needed to order another birth certificate copy for him.