Maurice Mahon, 1st Baron Hartland

Maurice Mahon, 1st Baron Hartland (21 June 1738 – 4 January 1819), was an Irish politician and landowner. He and his sons intermittently represented Roscommon in the Parliament of Ireland and the United Kingdom Parliament. He was able to transform his support of the Union of Great Britain and Ireland into a peerage, but was frustrated in his subsequent desire to become a viscount.

Mahon was the son of Thomas Mahon and Hon. Jane, daughter of Maurice Crosbie, 1st Baron Brandon, born in Strokestown. On 17 June 1765, he married Hon. Catherine (died March 1834), daughter of Stephen Moore, 1st Viscount Mount Cashell.They had three sons: Thomas (1766–1835), Stephen (1768–1828), and Maurice (1772–1845).

Maurice's father Thomas died in 1782, and Maurice succeeded to the family's Strokestown estate. The Mahons were one of several important electoral interests in Roscommon, and Maurice was able to succeed his father as one of the representatives for County Roscommon in the Irish Parliament. However, he lost the seat to Arthur French, of French Park, in 1783.

Mahon was eager to be created a peer, and the widespread bribery preceding the Union provided him with an opportunity. When Viscount Kingsborough succeeded his father as Earl of Kingston in 1799 and triggered a by-election for County Roscommon, Mahon saw an opportunity. The King family's preferred candidate, Hon. Robert King, opposed the Union, and Mahon got the support of the administration by promising them a pro-Union vote. With their help, Mahon won the support of the Catholic and independent interests of the county for his eldest son Thomas, who had recently defended Carlow during the Rebellion of 1798. King ultimately stood down before the poll, and Thomas took the Roscommon seat. However, the Roscommon electors were implacably anti-Union, and Thomas absented himself from Parliament rather than vote for or against the Union. Maurice was forced to buy a seat at Knocktopher for his younger son Stephen to carry out his obligations to the administration.

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