iCloud Apple Watch Lock

Hello, I have been reading forums on what to do if your apple watch is iCloud locked but there is really nothing I can do about it. Here's my problem. One of my friends gave me his uncle's apple watch for a iPhone 6 plus that was in bad condition. He gave me the apple watch and told me that I'm not gonna have much luck in getting through to use it because it has a iCloud lock on it. I know most people would tell me to ask his uncle to unlock it, but the thing is his uncle is dead. Anything I can do? I am very desperate for a response. Thank You!