The Adventures of Captain Horn by Frank R. Stockton

When Banker went back to the prison cell, he was still firmly convinced that he had been overreached by his former captain, Raminez; and, although he knew it not, there were good reasons for his convictions. Often had he noticed, in the Rackbirds' camp, a peculiar form of the eyebrows which surmounted the slender, slightly aquiline nose of his chief. Whenever Raminez was anxious, or beginning to be angered, his brow would slightly knit, and the ends of his eyebrows would approach each other, curling upward and outward as they did so. This was an action of the eyebrows which was peculiar to the Darcias of Granada, from which family the professor's father had taken a wife, and had brought her to Paris.

A sister of this wife had afterwards married a Spanish gentleman named Blanquote, whose second son, having fallen into disgrace in Spain, had gone to America, where he changed his name to Raminez, and performed a number of discreditable deeds, among which was the deception of several of his discreditable comrades in regard to his family. They could not help knowing that he came from Spain, and he made them all believe that his real name was Raminez. There had been three of them, besides Banker, who had made it the object of their lives to wait for the opportunity to obtain blackmail from his family, by threatened declarations of his deeds.