Partners in mid-1830s = Thomas Baring (grandson of Sir Francis); Humphrey St John Mildmay was the 'over-cautious' son-in-law of Alexander Baring; Joshua Bates; John and Francis Baring. One of 'the City's two dominant merchant banks.'
Sources
Kynaston City of London I, pp 92-3 for Bates; pp. 115-6 for 'Tom' Baring and Mildmay: p. 117 for role with Rothschilds.