Booksellers based at 22 Poultry, London. Charles was apprenticed to his brother in 1756, freed after six years, and became his partner. They were renowned publishers of dissenting and American literature—Charles visited Philadelphia in 1764. Their bookshop became an important social hub, visited regularly by S. Johnson among others. On Edward's death, Charles continued until 1800, selling the business to Joseph Mawman.
From The Oxford Companion to the Book in Oxford Reference.