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Matthew Boulton  (; 3 September 1728 - 17 August 1809) was an English manufacturer and business partner of Scottish engineer James Watt. In the final quarter of the 18th century, the partnership installed hundreds of Boulton & Watt steam engines, which were a great advance on the state of the art, making possible the mechanisation of factories and mills. Boulton applied modern techniques to the minting of coins, striking millions of pieces for Britain and other countries, and supplying the Royal Mint with up-to-date equipment.

Boulton was widely involved in civic activities in Birmingham. His friend Dr John Ash had long sought to build a hospital in the town. A great fan of the music of Handel, Boulton conceived of the idea to hold a music festival in Birmingham to raise funds for the hospital. The festival took place in September 1768, the first of a series stretching well into the twentieth century. The hospital opened in 1779. Boulton also helped build the General Dispensary, where outpatient treatment could be obtained. A firm supporter of the Dispensary, he served as treasurer, and wrote, "If the funds of the institution are not sufficient for its support, I will make up the deficiency." The Dispensary soon outgrew its original quarters, and a new building in Temple Row was opened in 1808, shortly before Boulton's death.  Boulton helped found the New Street Theatre in 1774, and later wrote that having a theatre encouraged well-to-do visitors to come to Birmingham, and to spend more money than they would have otherwise. Boulton attempted to have the theatre recognised as a patent theatre with a Royal Patent, entitled to present serious drama; he failed in 1779 but succeeded in 1807. He also supported Birmingham's Oratorio Choral Society, and collaborated with button maker and amateur musical promoter Joseph Moore to put on a series of private concerts in 1799. He maintained a pew at St Paul's Church, Birmingham, a centre of musical excellence. When performances of the Messiah were organised at Westminster Abbey in 1784 in the (incorrect) belief it was the centennial of Handel's birth and the (correct) belief that it was the 25th anniversary of his death, Boulton attended and wrote, "I scarcely know which was grandest, the sounds or the scene. Both was transcendibly fine that it is not in my power of words to describe. In the grand Halleluja my soul almost ascended from my body."  Concerned about the level of crime in Birmingham, Boulton complained, "The streets are infested from Noon Day to midnight with prostitutes." In an era prior to the establishment of the police, Boulton served on a committee to organise volunteers to patrol the streets at night and reduce crime. He supported the local militia, providing money for weapons. In 1794 he was elected High Sheriff of Staffordshire, his county of residence.  Besides seeking to improve local life, Boulton took an interest in world affairs. Initially sympathetic to the cause of the rebellious American colonists, Boulton changed his view once he realised that an independent America might be a threat to British trade, and in 1775 organised a petition urging the government to take a hard line with the Americans--though when the revolution proved successful, he resumed trade with the former colonies. He was more sympathetic to the cause of the French Revolution, believing it justified, though he expressed his horror at the bloody excesses of the Revolutionary government. When war with France broke out, he paid for weapons for a company of volunteers, sworn to resist any French invasion.
Matthew Boulton