[5] His official title was "Chief Composer and Master of the Music attending His Majesty's State in Ireland" at Dublin Castle.
[6] The deed was witnessed by a woman named Elen: Du Bourg (sic) of the City of Dublin, Spinster, possibly a relative of Dubourg's.
The deed recorded that £460 had been paid by Dubourg to Barry concerning separate plots of ground in Capel Street and Arbour Hill, Dublin.
[7] The deed was witnessed by "Peter Gunan of the said City (of Dublin), Instrument Maker", who is known to have tuned and maintained the organ at Trinity College Chapel during the 1700s.
Around 15 May 1736, Benjamin Victor, theatre manager in London, wrote to Dubourg in Dublin concerning the upcoming marriage of Frederick, Prince of Wales to Princess Augusta of Saxe-Gotha an event at which Handel saw a chance to gain Royal Patronage: "...As to the Operas, they must tumble, for the King's presence could hardly hold them up, and even that prop is denied them, for his Majesty will not admit his royal ears to be tickled this season.
Despite Swift's sally against Dubourg's orchestra, Handel thought they played quite well, writing to Charles Jennens, "as for the Instruments they are really excellent, Mr. Dubourgh being at the Head of them, and the Musick sounds delightfully in this charming Room".
[10] Of a concert in 1742 conducted by Handel, the following anecdote was told: Dubourg played a cadenza in which he wandered far from the theme creating complex modulations of it.
The inscription on his tombstone reads: "Here lyeth the body of Matthew Dubourg, chief composer and master of music in the kingdom of Ireland, servant to four generations of the illustrious House of Hanover, George I. and II., his Royal Highness the late Prince of Wales, and His present Majesty; as also instructor in Music to their Royal Highnesses the Duke of Cumberland and the late Prince Frederick.
Tho' sweet Orpheus thou couds't Bring Soft pleadings from the trembling string Unmov'd the King of Terror stands, Nor owns the magic of thy hands[5][3]