My mother passed away 2 years ago. My stepfather is moving to Michigan, and I probably won't see him again. Does he get to keep my mothers things that were passed down to her. Greatgrandma grandma etc.

You need to look at it, from this point.

Does a husband inherit the belongings of his wife.

The answer is it depends on the location and if there was a will. Things are passed down because the person who had them, gives them to the other person. Or notes in their will.

So what was said about these in your mothers will.

Also, from at least my view point, how long were they married, I have been married to my wife for almost 16 years, she is a step mother to my older children. When I die, after all those years, my special things are also special to her also.

And have you just talked to him about them.