Find an old friend

Hi everyone. I’m new to this site and I’m trying to find an old friend. His name is Dave Innes and he would be in his late 60’s by now. He was a primary school teacher for a few years in Carrickfergus , Northern Ireland. And also a youth leader at the local YM. The last place I know that he worked 1974-1976 was in Orrell Lodge in Wigan which I believe was a boys home or hostel at the time. We lost touch after that and my last correspondence was “returned to sender” I’ve tried over the years to find out where he went through lists of different avenues up to no avail. And then just by luck I put in Orrell Lodge and when it came up I then found this site. Hopefully someone will know him or maybe his family. Thank you for any help you can provide.