Brian Blessed (in-universe)

Brian Blessed was an actor who once married Nicola Bryant.

Biography
Blessed was once married to Nicola Bryant, and act she was eventually "put away" for. (WC: The Trial)

Blessed played Rassilon in a BBC version of Remote media in Sam Jones's subconscious. (PROSE: Interference - Book One)

According to Trix, he also played Augustus in I, Claudius. (PROSE: The Gallifrey Chronicles)