I'm having a hard time remembering some names of people that I want to find on Facebook. Any help?

I’m kind of trying to “connect with my past” but having a hard time remembering some names. And it’s not just the names, I’m also having a hard time remembering the people, too! (for example, I would like to find as many people as possible from my old church. But I can’t remember all the people that went to the church at the time.)
I guess I could just write it off as, “If I can’t remember their name, obviously they weren’t important in my life!” but I just can’t shake this feeling that it’s important that I connect with a lot people. Who knows what could happen if I connect!