On our recent trip to Ireland we spent some time in Dublin and were able to visit  24 Upper Merrion Street, Dublin, now the Merrion Hotel.  This is allegedly the birthplace of the Great Duke although there is a question that he was born at 6 Merrion Street, very close by.

Anyway the Merrion Hotel were extremely hospitable to us and showed us around the hotel which is extremely well decorated and furnished. The managers of the hotel were quite clear this was where Wellington was born. We had a good drink there and drank his health.  If in Dublin go there and say you are a Wellington fan and they will show you around this very classy hotel. Might be a bit expensive to stay in!!