The British Government granted him lands in Manchester, and two other towns in Nova Scotia, and a township in Upper Canada, which bears his name. He was a large proprietor of lands on the Kennebec, Maine, prior to the Revolution, but in 1778, he was proscribed and banished and included in the Conspiracy Act a year later, and his entire estate confiscated. His mansion house in Roxbury was seized and sold by the State, but as the fee was in Mrs. Hallowell, her heirs sued to recover of the person who held under the deed of the Commission of Confiscation and obtained judgement in 1803 in the United States Circuit Court, by which she recovered the property.
In 1784, when Mrs. Adams, the wife of the first minister from the United States was in England, she relates that both Mr. Hallowell and his wife treated her with respect and kindness. They also urged her to take lodgings with them, but this she declined. She records, too, that they lived in handsome style but not as splendidly as when in Boston. She accepted an invitation to "an unceremonious family dinner" as Mrs. Hallowell called it and met the Rev. Dr. Walter, Rector of Trinity Church, and two other gentlemen who belonged to Massachusetts.
On visiting Boston in 1796, Captain Hallowell was accompanied by his daughter, Mrs. Emsley, whose husband had just been appointed Chief Justice of Upper Canada. During his stay the odium which attached to his official relations to the Crown seemed to have been forgotten, since he was received by his former associates with the greatest kindness and hospitality. He died at York (Toronto) Upper Canada, in 1799, aged seventy-five, and was the last survivor of the Board of Commissioners.
Captain Hallowell had two sons, both of whom changed their names. Ward Nicholas Hallowell's name was changed to Boylston. He was born in Boston in 1749. Sabine says: "I have before me the original license bearing the signature of George III by which he was authorized to change his name;" it recites—"That Nicholas Boylston, his uncle by his mother's side has conceived a very great affection for him, the petitioner, and has promised to leave him at his death, certain estates which are very considerable, etc." In early life he made a tour of Europe, visiting Italy, Turkey, Syria, Palestine, Egypt and along the coast of Barbary; and arrived in England in 1775 through France, and Flanders. He dined at Governor Hutchinson's, London, with some fellow Loyalists, July 29, 1775, and entertained the company with an account of his travels, and, at subsequent periods, exhibited the curiosities which he brought from the Holy Land, Egypt, and other countries to the unhappy exiles from his native state.
In the Autumn of the next year, he was in lodgings at Shepton Mallet. He became a member of the Loyalist Association, formed in London in 1799. In 1800 he returned to Boston and laid claim to his father's estate that had been confiscated and sold, as being the property of his mother in her own right. Having assumed her name of Boylston, he obtained the estate by due process of law, as previously stated. In 1810 he presented Harvard College with a valuable collection of medical and anatomical works and engravings. He took his mother's name of Boylston, and thus claimed the family estate. He died at his seat in Roxbury, January 7, 1828.
He was a gentleman of education and took an active interest in the Roxbury schools. His liberality is commemorated by a school, and a street named after him, Boylston street being one of the principal streets in Boston.
Sir Benjamin Hallowell (Carew), another son of Captain Hallowell, who, succeeding to the estates of the Carews of Beddington, assumed the name and arms of that family. He was one of the eight Boston boys who subsequently attained high rank in the British service. Admiral Sir Isaac Coffin, Sir Benjamin Hallowell (Carew), John Singleton Copley, the younger, who became Lord Lyndhurst, Lord Chancellor of England, General Sir John Coffin, Hugh Mackay Gordon, Sir David Ochterlony, Sir Roger Hale Sheaff, Sir Aston Coffin.
Entering the royal navy during the American war he was at the time of his death in 1834, an admiral of the Blue in the British Navy, G. C. B., K. St. F. M. His commission as Lieutenant, bears date August, 1781; as Captain, in 1793; as Rear-Admiral, in 1811; as Vice-Admiral, in 1819. He was made a Knight Commander of the Bath in 1819, and was promoted to the rank of Grand Cross in 1831.
His employments at sea were various and arduous. He was with Rodney in the memorable battle with De Grasse; also at the siege of Bastia; and in command of a ship-of-the-line under Hotham, in the encounter with the French off the Hieres Islands. He served as a volunteer on board the Victory, in the battle of Cape St. Vincent. In the battle, Admiral Jarvis took his official post on the quarter deck of the Victory. Calder, the captain of the fleet kept bringing reports of the increasing numbers, observed till he reached twenty-seven, and said something of the disparity. Enough of that, said Jarvis, the die is cast and if there are fifty sail, I will go through them. Hallowell could not contain himself. He slapped the great admiral on the back, crying "That's right, Sir John, and by God, we'll give them a damned good licking." He was in command of the Swiftsure of seventy-four guns, and contributed essentially to Nelson's victory in the battle of the Nile. From a part of the mainmast of L'Orient, which was picked up by the Swiftsure, Hallowell directed his carpenter to make a coffin, which was sent to Nelson with the following letter:
"Sir, I have taken the liberty of presenting you a coffin made from the mainmast of L'Orient, that when you have finished your military career in this world, you may be buried in one of your trophies. But that that period may be far distant is the earnest wish of your sincere friend,
"Benjamin Hallowell."