This indicated the estimate of both Hood and Rodney of the value of his services in the late famous battle. Peace soon came, but there was much to discourage him. His family was broken up. The remains of his father lay in their last resting place in New York. The Shrewsbury was paid off, and he was put out of commission. He was his own master with abundance of prize money. Many of his family and friends from Boston had taken up their abode in London, and the refugee loyalists formed there a large circle. They all liked Isaac, a handsome young fellow with pleasant ways, generous and unpretending and loaded with laurels. He was held in high estimation by the great naval celebrities and by the public, their attention might have turned the head of one less sensible. Sir Guy Carleton, who had been created Lord Dorchester, could hardly have saved Canada for the Crown in 1775 without the aid of the Coffins, was now appointed Governor of Canada. It was probably at his request that Isaac was appointed to the command of the Thisbe, to take him and his family and suite to Quebec in 1786. While on his way up the river to Quebec the Thisbe was becalmed off the Magdalen Islands, and struck by their appearance, perhaps the more attractive from the autumnal splendor, Coffin requested, probably not in very serious earnest, that Lord Dorchester as representative of the Crown, would bestow them on him. This request seemed reasonable to the governor, and eventually letters patent were granted to him on the Islands. The records recite the grant of the islands to him for his zeal and unremitting persevering efforts in the public service. At Sir Isaac's death he left the island by will to his nephew, Admiral John T. Coffin, who died in 1882. On his return to Europe he was employed in many branches of the service. In 1794 he was in charge of the Melampus frigate, in 1796 he was resident commissioner of Corsica. From Elba he removed to Lisbon, to take charge of the naval establishment there for the next two years. He was then dispatched to superintend the arsenal at Port Mahon when Minorca fell into the hands of the British, and from there to Nova Scotia, in the Venus frigate. At Halifax and afterwards at Sheerness, as resident commissioner, he was employed till April 1804, when appointed rear admiral he hoisted his flag on the Gladiator, and the following month was created a baronet.