History of Rollinsford, New Hampshire, USA

Around 1630, the land was part of Dover. The area was first called "Sligo", likely after County Sligo in Ireland.

In 1729 the area was established as a parish called "Summersworth", meaning summer town, because the ministers preached here during the summer. In 1754, it was set off and incorporated as a town by colonial governor Benning Wentworth, although thereafter spelled "Somersworth".

The village of Salmon Falls was founded in 1823 by a group of local investors led by James Rundlet of Portsmouth, who on June 17, 1822, incorporated the Salmon Falls Manufacturing Company to manufacture woolen cloth using the power of the Salmon Falls River, a Piscataqua River tributary.

Beginning in the early 1820s, water powered textile mills were established at the larger falls, and the town was divided between them—Great Falls became Somersworth, and Salmon Falls became Rollinsford, incorporated in 1849.