Albert Barnes Commentary Judges 6:11

"And the angel of Jehovah came, and sat under the oak which was in Ophrah, that pertained unto Joash the Abiezrite: and his son Gideon was beating out wheat in the winepress, to hide it from the Midianites." — Judges 6:11 (ASV)

An oak - “ The oak,” indicating it as a well-known tree, still standing in the writer’s days.

There was another Ophrah in Benjamin (Joshua 18:23). This Ophrah was in Manasseh, and was the village of Joash, the head, apparently, of the family of Abiezer, which was one of the families of Gilead, the son of Machir, the son of Manasseh (Numbers 26:30).