Just discovered this as i did a Google search for my name Paul Gehan.
I live in Brisbane Autralia .
I ahve heard we have Irish decendents but have no idea where or anything. I did a cycle round Europe in 1998 and i discovered a grave with Gehan on it and i chased a few leads and was able to track it to some French military background. I remember he region now however but could certainly look at my diaries to recall.