Unimpeachable in example sentence
On this point the landlord told him he was mistaken; for, though not recorded in the histories, because in the author's opinion there was no need to mention anything so obvious and necessary as money and clean shirts, it was not to be supposed therefore that they did not carry them, and he might regard it as certain and established that all knights-errant (about whom there were so many full and unimpeachable books) carried well-furnished purses in case of emergency, and likewise carried shirts and a little box of ointment to cure the wounds they received.