Granby

Granby was a young soldier who was killed while scouting the Moon's surface. He had been killed maliciously by the Vrall, who took his brain tissue and used it to give themselves knowledge of Earth. However, this helped the Doctor deduce the true nature of the Vrall; they claimed to gain knowledge of English from Turlough, but referred to robots as 'mechanical servants', which was a term that Granby would have used rather than Turlough. (PROSE:  Imperial Moon)