After his father's death, in 1781, he was apprenticed to a trade in Boston, walking to the city, a distance of seven miles, every day.[4]
Career
In 1789, he engaged in the business of marine insurance, often for ships involved in the kidnapping and sale of African people through the trans-Atlantic slave trade, and accumulated a large fortune.[5] He kept with his own hand very accurate accounts, a rare thing in those days, and made it a rule never to borrow money, never to engage in speculation of any kind, and never to take more than the legal rate of interest. He retired from business in 1803, and, until 1806, devoted himself to the settlement of all the risks in which he was interested.[4]
He then accepted the presidency of the New England Insurance Company, the first chartered company of the kind in the state, and filled the office for several years. In his retirement at Medford he took special pleasure in the cultivation of trees, planting many thousands of them about his farm. He was at different times a member of both branches of the legislature, of the first Boston City Council, and of the Massachusetts Constitutional Convention of 1820–1821.[4]
While in the legislature, he took a prominent part in suppressing lotteries, which at that time were flourishing in the state. Mr. Brooks gave liberally, and without parade, to many benevolent objects, and, besides this, his private donations for many years exceeded his domestic expenses.[6]
Brooks died January 1, 1849, in Boston, Massachusetts, bequeathing what was believed to be the largest estate in Boston, about two million dollars, to his seven surviving children.[9] He was originally buried at the Salem Street Burying Ground in Medford, Massachusetts, but was later relocated to a family plot in Oak Grove Cemetery, near the Brooks Estate in Medford.[7][10]