The Master
From Tardis Wiki, the free Doctor Who reference
The Master was a Time Lord.
Biography
The Master was in his TARDIS when it was parked on Earth in 1981. The Doctor's TARDIS materialized around it (Logopolis (TV story)). This is part of the events that would lead to Logopolis' destruction and the Fourth Doctor's regeneration. (Logopolis (TV story),He Jests at Scars... (audio story)).
The Valeyard's Course Correction and Mistake
When the Valeyard was fixing his past mistakes, he tried to stop his younger self's trip to Logopolis in order to save it. But he accidently time-rammed his younger self and past TARDIS, destroying them. The Master's TARDIS was time-rammed too as it was inside the Doctor's TARDIS. (He Jests at Scars... (audio story))
