Timothy Foster was born on May 14, 1720, at Attleborough in Massachusetts Bay Colony—the ninth of thirteen children.

His mother Margaret Ware (1685–1761) and his father John Foster (1680–1759) were born, respectively, in the Massachusetts Bay towns of Wrentham and Salem.

[1][2][3][4] Timothy Foster acquired a large tract of forest and meadow in Pondtown Plantation, now known as Winthrop, Maine, in 1764.

The following year, Foster and his wife Sibboleth and their ten children relocated from Attleborough to Pondtown, becoming the first pioneers to settle in the area.

[6][7][8][9] The town of Winthrop petitioned the Massachusetts General Court in January of 1773 with grievances against the Parliament of the United Kingdom.

[14][15][16] Timothy Foster suffered a skull fracture and lost consciousness on April 1, 1785, after being hit by a tree limb.

[7][17] According to one account they were able to briefly revive him: On the return of the son the indented part of the skull was raised, and Capt.

Outside her home the Daughters of the American Revolution placed a memorial plaque on a boulder on South Road near Birchwood Lane that honors Timothy Foster as a patriot and the first settler of Winthrop.