How to Find a Person Without a Last Name

So long story short I know his name (at least a nickname), his major/where he went to school, and what he does for work and where he lives. The thing is based off his name I cannot find him. I was thinking about calling the two type of businesses he could work at in an area and say I was talking to a colleague and the colleague said x person ghost wrote it and mentioned he went to such and such a school. Not to long after I needed an article written but I could not find this fellow and I really liked his work but I could not find him. I feel like this could maybe work but I want other ideas that are less of a pain in the ass to do. I want him as a witness for a case but is a pain in the butt to find him (I am trying to defend against an accusation, no I really don't like this).I am open to easier ways of finding his info but we shall see

>>21823 +1 for interest, but you're going to need to provide details if you want ideas. Make it easy for people to help you, not have to do a bunch of guesswork.

linkedin and time... Thompson reuters CLEAR if you have connections

Do you have the full address? Or enough that lurking through say Whitepages is doable? Otherwise maybe Check if he wrote any papers or something online or did anything significant maybe? Like [firstname] [college] and then other terms relating to the major, I've found some people this way

>>21823 i live in a small town, so if i want to find a person i just search on facebook for the first name and sometimes the school she used to attend, he must have some kind of social media.

A first name and a school? FFS just hunt for graduation books or see if there is a public record of graduate classes. Then you brute your way through each name and only hold those with the first name. That'll reduce the numbers real quick and help figure a last name.