What does Judges 19:16 mean?

That evening, an old man came in from working in the fields. He was originally from the hill country of Ephraim, but was living in Gibeah. The people there were Benjaminites. Judges 19:16 - Modern Text Bible

(An outsider, not a native Benjaminite, notices the travelers. He shares their background as a fellow Ephraimite.)