Peter Davison(I)

He is the father-in-law to David Tennant. Davison was the Fifth Doctor and Tennant was the Tenth. Tennant has always been very open about the fact that Davison was his favorite Doctor and he presented the documentary Come in Number Five (2011), which covered the production of the Davison era of the series and featured as an extra on the Special Edition DVD release of Resurrection of the Daleks: Part One (1984).

I followed Tom Baker, I was cast to be different from Tom Baker. So I was my own Doctor, no doubt about that.