settled July 4, 1629, by Thomas Graves, Increase Nowell, Simon Hoyt, the Rev. Francis Bright, and the Spragues (Ralph, Richard, & William Sprague), among some 100 others who preceded the Great Migration. John Winthrop's company stopped here for some time in 1630, before deciding to accept the invitation of William Blaxton to settle across the Charles River with him on the Shawmut peninsula. This was the first act in the foundation of the city of Boston. The territory of Charlestown was initially quite large. From it, Woburn was separated in 1642, Malden in 1649 (including what is now Melrose and Everett) and Stoneham in 1725. South Medford, the land south of the Mystic River (now surrounded by Somerville), was known as "Mistick Field" and was transferred from Charlestown to Medford in 1754. This grant also included the "Charlestown Wood Lots" (the Medford part of the Middlesex Fells), and part of what was at the time Woburn (now Winchester). Other parts of Medford were transferred to Charlestown in 1811. Still-rural Somerville was split off in 1842 as Charlestown was urbanizing. Everett, Burlington, Arlington and Cambridge also acquired areas originally allocated to Charlestown. Landfill operations eliminated the narrow Charlestown Neck that connected the northwest end of the Charlestown Peninsula to the mainland at Sullivan Square. On June 17, 1775, the Charlestown Peninsula was the site of the Battle of Bunker Hill, named for a hill at the northwest end of the peninsula near Charlestown Neck. British troops unloaded at Moulton's Point and much of the battle took place on Breed's Hill, which overlooked the harbor from about 400 yards off the southern end of the peninsula. The town, including its wharves and dockyards, was almost completely destroyed during the battle by the British. The town was not appreciably rebuilt until the end of hostilities but, in 1786, the first bridge across the Charles River connected Boston with Charlestown. An Navy Yard was established in 1800; Charlestown State Prison opened in 1805. The Bunker Hill Monument was erected between 1827 and 1843 using Quincy granite brought to the site by a combination of purpose-built railway and barge. Notable businesses included the Bunker Hill Breweries (1821) and Schrafft's candy company (1861). The Charlestown Branch Railroad opened in 1840 to Sweet's Wharf. Tudor Wharf was the departure point for the ships of the Tudor Ice Company. Around the 1860s an influx of Irish immigrants arrived