Robert Devereux

After an aftershock of the Time Fracture sent Tia Kofi back the court of Elizabeth I, an Elizabethan courtier engaged Kofi in conversation, misunderstanding the stranger's self-description as a queen and taking her to be foreign royalty. The two were then menaced by a Cyberman which had materialised in a hallway due to the same aftershock, which the courtier described as a "metal man". (WC: Tia Kofi Enters the Time Fracture!)

Behind the scenes
In Time Fracture, which is not considered a valid source on the wiki, the courtier is named Sir Robert Devereux.