kaprys 1 | 1,424 4 Feb 2018 #541It may be a rare name in the UK but not in Poland. Both Matuszak and Matusiak are popular surnames in Poland. Matusziak must be a misspelling, though. Stanisław was a popular name back then.In fact, when you google both Stanisław Matusiak and Stanisław Matuszak, you get quite a few results. And I bet there are and were more men by this name in Poland.Do you know where he came from?How about posting the information you have on fb and ask people to share it?