Henry John Reuben Dawson-Damer, 3rd Earl of Portarlington (5 September 1822 – 1 March 1889) was an Irish peer.
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Early life
Henry was born on 5 September 1822 as the eldest son of Hon. Henry Dawson-Damer, a Captain in the Royal Navy, and the former Eliza Moriarty, who lived at Milton Abbey, Dorset.
His father was the second son of John Dawson, 1st Earl of Portarlington and Lady Caroline Stuart (a daughter of Prime Minister John Stuart, 3rd Earl of Bute). His maternal grandparents were Capt. Edmund Joshua Moriarty and Lady Lucy Luttrell (daughter of the 1st Earl of Carhampton).
Career
On 17 November 1841, he was commissioned a cornet in the Dorsetshire Yeomanry.
He became Earl of Portarlington in 1845 on the death of his uncle John Dawson, 2nd Earl of Portarlington and resigned his Yeomanry commission in November 1848. The Earl was appointed a Knight of the Order of St Patrick on 8 February 1879.
Personal life
He married Lady Alexandrina Octavia Maria Vane, second daughter of Charles Vane, 3rd Marquess of Londonderry.
Lord Portarlington died, without issue, on 1 March 1889 and was succeeded in the earldom by his cousin, Lionel.