When was he born?

What year did he die?

Do you have aunts or uncles or other family members who may be able to give you clues/leads?

Can you obtain a copy of the divorce papers?

Do you have a death certificatem, funeral program, SSDI info
What do you know of his parents?

You say he was a minister, what church did he pastor last?

His denomination or affiliate group may have information or the local ministerial alliance.

Did you locate hin in the city directory or telephone book?

Can you identify who currently lives in his neighborhood or lived there when he was living or at the time of his death?

Best wishes for success in your searchimg.