…he was the person he represented himself to be and not sailing under false colours after having boxed the compass on the strict q.t. somewhere) and the fictitious addressee of the missive which made him nourish some suspicions of our friend’s bona fides nevertheless it reminded him in a way of a longcherished plan he meant to one day realise some Wednesday or Saturday of travelling to London via long sea not to say that he had ever travelled extensively to any great extent but he was…
There are no more uses of "bona fides" in the book.
Show samples from other sources
I caught at the opening; here was some chance to establish my bona fides, as well as to find Murtagh and Rupert.
Diana Gabaldon -- Outlander
The Clarkston job offered an opportunity to establish his bona fides as a reformer.