In point of fact, he had been kidnapped by a drunken uncle who had mistaken him for his own pet monkey. Tycho escaped by disguising himself as a garden gnome and fleeing the country.
He went on to pursue studies in astronomy and mathematics, about which he was passionate. So passionate, in fact that he lost his nose in a duel with a friend who disagreed with his interpretation of the binomial theorem. His prosthetic nose is made of porous rubber which expands and contorts with changing climactic conditions.
His love of astronomy makes him an ideal crew mate and he’s pretty handy with a posidrive screwdriver too.
strange historic parallels exist here