In my experience, Irish are friendly and accommodating. Like Helga Hufflepuff would shy from shaming, as opposed to Salazar Slytherin adding a little English to the spin, set on due course and always to win whereas a bold-faced Godric Griffindor would head in foolish, or take up arms like brutish Scottish.
And that left Rowena Ravenclaw and intelligent tales, which is ultimately why I guessed her Wales.
