You say in your article that the hill of Tara is in Dublin. It isn't. It's over 40 kms outside it.
You say that the name Dublin is related to the word 'double'. It isn't. It's an anglicization of the Irish 'Dubh Linn', meaning Black Pool. It has nothing to do with 'double'.
The name Tara is not some sort of anagram of 'Ararat'. It's an anglicization of the Irish 'Teamhair na Ri', meaning Hill of the King.