Fagan won the Irish title in front of his friends and family after he stopped Thomas in the seventh round.
He was succeeded in the Irish titles by his first cousin, the sixth Earl.
The tenth and final round highlight the desire that both men had to win an Irish title.
In all he has won 10 Irish titles, including 7 light-heavyweight belts.
He also remains active in billiards, winning the Irish title for the eighth time in 2008.
As a teenager he was an amateur boxer, winning four Irish national titles.
He was succeeded in the Irish title by his younger brother, Henry.
However, he was succeeded in the Irish titles by his second cousin, the sixth Earl.
It is probable that his Irish titles lapsed at his death.
Added to that was the effect of a very good selection of Irish titles.