'After many changes of partners, with the Barclays, Bevans, and Trittons predominating, this firm became the nucleus of the corporate merger of 1896 which became Barclays Bank.' [Price, ODNB].
Jacob M. Price, rev. Leslie Hannah, 'Barclay, David (1729–1809), banker and brewer', http://www.oxforddnb.com/view/article/37150?docPos=3; Hannah, Leslie. "Bevan, Robert Cooper Lee (1809–1890), banker." Oxford Dictionary of National Biography. 23 Sep. 2004; Accessed 3 Apr. 2020. https://www.oxforddnb.com/view/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-47420.