Help! Trying to find the Owner of a property

[Joe DeFarias]

I'm looking for some help. 

I found out that the owner next to one of my properties had past away over a year ago. It's a three family and I would like to purchase the property. I found the Owner's name but she had no sons or daughters, only cousins. The property has sat vacant for more than a year now and I don't know who owns it currently. How can I find out who received the property after the Owner's death?