@sporky No, but there are quite a few theories floating about in the fandom that point to Rory possibly being the Master. His not being surprised by the TARDIS being larger on the inside, his ID card in the hospital in his first episode says he's been a nurse since the early 90's, which is WAY too early, he's mentioned hearing knocking, and has knocked the Master's drumbeat. If you Google it there are TONS of theories.