HCR diary 8.4.1826 "to Aders where I heard melancholy news - poor Sieveking has failed - an excellent man and his family must be grievously afflicted by the blow - A: spoke of the uncertainty of the times as of an overwhelming evil and of Rothschild as a sort of general prop intimating that had not R: taken this paper of his own house they could not have gone on"
Nathan Meyer Rothschild (DNB 1777-1836). The DNB article refers to Rothschild's substantial deposits of bullion over a prolonged period in 1825 which averted a stoppage of payments by the Bank of England. For Sieveking (QV*)