Freud's opinion of Irish people.

I don't know why he might have had difficulty in analysing people of a particular nationality. Maybe because they grew up in a different culture they are less expressive or more guarded, more analytical of freuds own motives and possibly suspicious of him or disdainful of the questions he asked, more inscrutable somehow. Maybe his style of questioning them wasn't ideal for them and there was no rapport and they did not communicate very well (not in terms of language fluency or anything, but in terms of mutual understanding? ) Maybe not all professionals and patients are compatible and can work well together?