In 1785 Arnold and his son Richard moved to Saint John, New Brunswick, where they speculated in land, and established a business doing trade with the West Indies. Arnold purchased large tracts of land in the Maugerville area, and acquired city lots in Saint John and Fredericton. Delivery of his first ship, the "Lord Sheffield", was accompanied by accusations from the builder that Arnold had cheated him; Arnold claimed that he had merely deducted the contractually agreed amount when the ship was delivered late. After her first voyage, Arnold returned to London in 1786 to bring his family to Saint John. While there he disentangled himself from a lawsuit over an unpaid debt that Peggy had been fighting while he was away, paying £900 to settle a £12,000 loan he had taken while living in Philadelphia. The family moved to Saint John in 1787, where Arnold created an uproar with a series of bad business deals and petty lawsuits. Following the most serious, a slander suit he won against a former business partner, townspeople burned him in effigy in front of his house as Peggy and the children watched. The family left Saint John to return to London in December 1791.