Jacoba Hilken with whom he had eight children. In 1735 he cooperated with his brother Johannes (IV) to promote the trade with Sweden. Spanish pieces of eight were used to produce silver ingots that were shipped on the Rooswijk, which sank in 1740. In 1742 both brothers lived separately on Herengracht; they each owned a chaise and two horses. In 1747 they sold the silver melting business at the end of Spiegelgracht, and concentrated on banking and assurance on ships and goods for customers in Sweden. Around 1751, they moved into the "Huis met de Hoofden" which they rented from the descendants of Louis De Geer. He wrote twice a week to Stockholm. When Johannes died – with whom he shared many bills of exchange – Anthoni Grill became the only heir and his other siblings were bequeathed. During the Seven Years' War France gave a total of 11 million sd. in subsidies to Sweden. In 1759, Anthoni lodged Bengt Ferner, a Swedish astronomer and mathematician, who kept a diary about his travels in Holland. Accompanied by Jacob Grill, Ferner visited the mint in Utrecht and Harderwijk, run by inlaws. In 1762 the name of the bank changed to Antoni Grill & Soonen. In 1768, as in 1736, the Swedish mystic, inventor and mining specialist Emanuel Swedenborg visited Grill. During the Amsterdam banking crisis of 1763, he was considerably involved in the bankruptcy of Leendert Pieter de Neufville, who failed to come to an agreement with his bankers. In December 1768 there was a crisis in Sweden. In 1769 the Caps were in favour of deregulation and encouraging free trade, however, they went swiftly to the other economic extreme. They immediately cut off state loans to industries and forced the Riksbank collect all their credits. This led to economic downturn as industrialists were forced to sell off their machinery to pay off debts, and workers suddenly lost their jobs. Their financial situation of the clearinghouse deteriorated, because of fluctuating exchange rates in the recent past. In 1773, Anthoni became owner of the Garphyttan factories when the previous owner (Michael Grubb) failed to repay the money he had borrowed from him. To be able to manage the factories, his sons Jacob (1734–1799), Abraham (1735–1805) and Anthony Grill Jr (1743–1805) moved to Stockholm. Their sister Helena Catharina (1739–1804) owned a quarter in the profitable "La Jalousie" plantation along the Commewijne River and