Homer was a Greek poet.
According to Sarah Jane Smith he was like an news anchormen of ancient Greece, who heared stories and wrote them down. Sarah Jane Smith believed that some of these stories were more than fictional and were based on real happenings. (PROSE: Eye of the Gorgon)
When the First Doctor and Steven Taylor discussed the plans for the capture of Troy Steven asked why the wouldn't use the wooden horse. The Doctor replied that he couldn't suggest that. Furthermore the Doctor thought that the whole story was absurd and might have been invented by Homer as some good dramatic device.(TV: The Myth Makers)
Odyssey was one of Homer's books. Ace looked at it. (PROSE: Timewyrm: Revelation)
The Eighth Doctor had a book of Homer in the library in the TARDIS. (PROSE: Reckless Engineering)