Franz Gottlieb

Father  was a priest living in an alternate timeline created by the use of the Utopian Engine. He and Anji Kapoor were accidentally transported to the Eternium when he operated the Engine. The Eighth Doctor went there in the TARDIS to rescue them, but could not leave after arriving. He hooked Gottlieb up to the TARDIS, using his biodata to get back to Earth. However, the strain of the process killed him. (PROSE: Reckless Engineering)