Mr. Tweedie is a journeyman silversmith from Baltimore whom Mrs. Lapham brings to Boston to be Mr. Lapham’s business partner. Johnny detests him instantly, calling him a “squeak-pig” and a “spinster aunt dressed up in men’s clothes.” Mr. Tweedie is something of a joke throughout the novel, particularly to Johnny and Cilla: he’s particular about the terms of his contract, changes his mind multiple times with regards to which Lapham daughter he wants to marry, and ultimately ends up marrying Mrs. Lapham. However, he nevertheless seems something of a shrewd businessman, as he fires Dove and manages to improve the Laphams’ financial prospects with his regular work for Mr. Lyte. Though Johnny never totally gets over his hatred of Mr. Tweedie, he ultimately seems to decide that Mr. Tweedie is a fine craftsman.