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In 1792 he was raised to the Peerage of Ireland as Baron of Oxmantown, in the County of Dublin, with remainder to his nephew Sir Lawrence Parsons, 5th Baronet. In 1795 he was made Viscount Oxmantown, of Oxmantown in the County
- Earl of Rosse
Laurence Parsons, 1st Viscount Oxmantown: Present holder:...
- Earl of Rosse
From his birth until he succeeded to the earldom in 1979, he was known as Lord Oxmantown. From 1979 to 2007, Lord and Lady Rosse facilitated many decades of research by A. P. W. Malcomson, former director of the Public Record Office of Northern Ireland , and latterly sponsored by the Irish Manuscripts Commission , to enable the ...
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- William Clere Leonard Brendan Parsons, 21 October 1936 (age 86), London, England
Laurence Parsons, 4th Earl of Rosse, Baron of Oxmantown, 7th Baronet of Birr Castle, was born 17 November 1840. Like his father, he pursued astronomy and is known for his attempt to design a truly flat mirror to use in a telescope. Lord Rosse succeeded his father as the 4th Earl of Rosse in 1867.
He built several giant telescopes. His 72-inch telescope, built in 1845 and colloquially known as the "Leviathan of Parsonstown", was the world's largest telescope, in terms of aperture size, until the early 20th century. From April 1807 until February 1841, he was styled as Baron Oxmantown.
In 1620 he was made a baronet; in 1643 he was deprived of his office as lord justice, and he died early in 1650. His greatgrandson, Sir Richard Parsons, bart. was created Baron Oxmantown and Viscount Rosse in 1681, and Richard's son and successor, Richard (d. 1741), was made earl of Rosse in 1718.
On 20 April 1807 he succeeded his uncle, Lawrence Parsons-Harman (1749–1807) as 2nd Baron Oxmantown and 2nd earl of Rosse. He became joint postmaster general in 1809, which gave him some opportunity to implement his ideas on financial retrenchment.
