Daubeny was a leading business man in Bristol, and a prominent member of the society of merchant venturers, serving in 1784 as master of the hall. Engaged in sugar refining, he was also a partner in the firm of Stevens and Cave, glass manufacturers, and in 1786 helped to found the Bristol banking firm of Ames, Cave and Co.
In 1768 he became a member of the ‘Steadfast Society’, the organization of one of the two rival groups in Bristol politics. He took a leading part in re-animating the society after the defeat of its candidates in 1774, served as assistant president in 1775, and became president in 1781. On the death of Sir Henry Lippincott, in 1781, Daubeny was returned as its candidate after a contest in which he received £5,000 from Government towards his election expenses.
He died 25 May 1806.
