Christopher Columbus

Christopher Columbus was a Genoese navigator and explorer who, amongst other things, discovered America in 1492.

While renowned for his discoveries, he was also a cruel man, who used American natives as slaves and, as a colonial governor, committed many atrocities. (AUDIO: Trouble in Paradise)

Encounters with the Doctor
According to one account, the First Doctor met Columbus and found him promising, but left before he made known his theory that the Earth was round. He later compared Ian Chesterton's scepticism to the treatment Columbus must have received. (PROSE: Doctor Who in an Exciting Adventure with the Daleks)

During or before his fourth incarnation, the Doctor travelled with Columbus on the Santa Maria, and suggested that Columbus plot his course with an orange and a biro, but Columbus didn't listen. (PROSE: Eye of Heaven)

The Sixth Doctor read his name in a collection of business cards of geniuses to consult for a problem of time slip. He commented with "He had a lot to answer for". (TV: The Two Doctors)

The Sixth Doctor and Peri Brown later met Columbus aboard the Santa Maria on 12 October 1492 when they were summoned to his ship by the Doctor's eleventh incarnation. (AUDIO: Trouble in Paradise)

Legacy
A city on the human colony planet Galspar was named Christopher Columbus. (AUDIO: I Scream)