It was created in the 1897 Diamond Jubilee Honours for the Lord Lieutenant of County Dublin and former Member of Parliament for County Dublin, Ion Hamilton.
The family seat was Abbotstown House, near Castleknock, County Dublin.
[2] The heir presumptive is his nephew, Ross Andrew James Hamilton (born 1990).
Debrett's peerage, baronetage, knightage, and companionage.
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