Geoffrey Balsam
From Tardis Wiki, the free Doctor Who reference
Geoffrey Balsam was the owner of a brass works and a slaver's boat. He was interested in Constance Clarke, much to her disdain. He became worried when the Sixth Doctor went off with Theodosia Middlemint. Sarah told him that she knew what he had done to his brother-in-law. (AUDIO: The Behemoth)