John Irwin, one of William Christy’s old partners, had his store at the northeast corner of Market and Fourth streets. He was a former Revolutionary officer, having been captain in the 2nd Pennsylvania Regiment. At the next corner, where Market Street intersected the South Diamond, in the large three-story brick building were the tavern and store of William Irwin, the other partner of Christy. This building was another of the houses built of brick taken from Fort Pitt.[255] To this house William Irwin had removed in 1799[256]; and here he furnished public entertainment, and sold, in addition to whisky, and other diverting drinks, “kettles, stoves, and dry goods.”[257] Dancing classes were also held in the building, those for ladies at three o’clock in the afternoon, and the classes for gentlemen at six o’clock in the evening.[258] More serious business was conducted there. In the large hall in the third story the courts were held for more than a year after being removed from Andrew Watson’s house.[259] This was likewise the room in which Lodge No. 45 now held its sessions.[260] North of the South Diamond the buildings were farther apart. At the southeast corner of the East Diamond and Diamond Alley was the log store of William Woods & Company.[261] On the opposite side of Market Street from John Irwin and William Irwin’s stores, in the middle of the block, was John Hamsher’s retail shop, where he sold copper and tin-plate articles, and clover seed.[262] Next door was the store of James Dunlap & Company.[263] In the Diamond, east of Market Street, was the semicircular market house, which covered most of this part of the Diamond. Its wide, projecting roof was supported by a double row of brick pillars. In the interior of the building were rows of stalls, with benches and blocks, for the butchers. Encircling the structure was a brick pavement along the curb of which the farmers and market gardeners were stationed.[264] In the Market House the borough elections were held.[265]