The Plymouth General Court appointed Alden to a number of important committees including the Committee to Revise Laws, the Committee on the Kennebec Trade, and a number of additional minor posts. Plymouth Colony held a patent entitling them to a monopoly on the fur trade at the Kennebec River in what would later become Maine. In 1634, a man named John Hocking from Piscataqua Plantation in New Hampshire interloped in the trade provoking a confrontation between him and traders from Plymouth Colony at Kennebec. Hocking shot a Plymouth colonist named Moses Talbot and, in turn, a Plymouth man shot Hocking. When the Plymouth traders arrived by boat at Boston, authorities there decided to imprison John Alden who was aboard the Plymouth vessel, even though he had not been present during the violence. It was only through the intervention of William Bradford that Alden was eventually released. In January 1628, the land along Plymouth Bay was divided up into farm lots with each individual receiving 20 acres plus an additional 20 acres for each family member. John and Priscilla Alden, who had three children at that time, received 100 acres along the Bluefish River in the area known as Duxbury (sometimes spelled Duxburough or Duxborrow at that time). Grants were drawn by lot, so the location of Alden's farm was not his selection. By chance, as historian Dorothy Wentworth observed, the location was ideal as it included upland that had been partially cleared by Native Americans, woodland, and salt marshes (a good source of hay). Alden built their first small house in 1628. As they were required to travel to Plymouth every Sunday for Sabbath services (10 miles away), they lived seasonally on their Duxbury farm for the first few years, staying in Plymouth during the winter to avoid long travels in harsh weather. The site was professionally excavated by Roland Wells Robbins in 1960, unearthing many artifacts including a halberd blade which is now exhibited at Pilgrim Hall Museum in Plymouth. The site is now part of the Duxbury school campus and is located next to a playing field. The footprint of the house is evident as a depression in the ground and is marked by a boulder, plaque, and other interpretive signage. In 1632, Alden was one of several men who petitioned the colony to have Duxbury set off as a separate church congregation with their own minister. This would allow those with Duxbury grants to reside on their farms year-round.