J. S. Morgan & Co. was amerchant banking firm based inLondon andNew York City founded byJunius Spencer Morgan, father ofJ. P. Morgan.
The business had originally been started by the American merchantGeorge Peabody conducting business on his own account when he took up residence in London in 1838. The business was formally incorporated asGeorge Peabody & Co. in 1851. Peabody's American agent was the New York bank,Duncan, Sherman & Company.[1]
Upon Peabody's retirement in 1864, control was assumed by Morgan who had joined the firm as a partner in 1854. As a consequence the firm was re-styled J. S. Morgan & Co.[2] The firm's New York agency was later to becomeJ.P. Morgan & Co. (under the leadership of Junius' sonJ. Pierpont Morgan, who had apprenticed as a cashier at Duncan, Sherman & Co.) a predecessor firm ofJPMorgan Chase.[3] A distant relative of Peabody, Massachusetts banker and merchantSamuel Endicott Peabody, became a partner in the firm around 1875.[4][5]
J. S. Morgan & Co. came to real prominence in 1871 when they undertook the issue of a French war loan during theFranco-Prussian War.[6][7] On the death of Junius in 1890, Pierpont became the senior partner of the London firm.[8] By 1910, all the firm's Morgan family partners were resident in the U.S. and to reflect this the London partnership was restructured with J. P. Morgan & Co. in the U.S. assuming a 50% ownership of the London business which was reconstituted asMorgan Grenfell & Co. in recognition of the senior London-based partner,Edward Grenfell.[9]