Mr. Peabody quickly took a prominent rank among the merchants of Baltimore. His manner was frank and engaging, and won him many friends. He was noted for "a judgment quick and cautious, clear and sound, a decided purpose, a firm will, energetic and persevering industry, punctuality and fidelity in every engagement, justice and honor controlling every transaction, and courtesy--that true courtesy which springs from genuine kindness--presiding over the intercourse of life." His business continued to increase, and in 1822 it became necessary to establish branches in Philadelphia and New York, over which Mr. Peabody exercised a careful supervision. He was thoroughly familiar with every detail of his business, and never suffered his vigilance to relax, however competent might be the subordinates in the immediate charge of those details. In 1827 he went to England on business for his firm, and during the next ten years made frequent voyages between New York and London. In 1829 Mr. Riggs withdrew from the firm, and Mr. Peabody become the actual head of the house, the style of the firm, which had previously been "Riggs & Peabody," being changed to "Peabody, Riggs & Co." The firm had for some time been the financial agents of the State of Maryland, and had managed the negotiations confided to them with great skill and success; and every year their banking department became more important and more profitable. In 1836 Mr. Peabody determined to extend his business, which was already very large, to England, and to open a branch house in London. In 1837 he removed to that city for the purpose of taking charge of his house there, and from that time London became his home.