Inigo Jones
From Tardis Wiki, the free Doctor Who reference
Inigo Jones was a 16th and 17th century British architect. He was a member of the Society of Horticultural Historians, and was involved in the building of Greenwich Park. (COMIC: Don't Step on the Grass)
When Melanie Bush met two versions of the Sixth Doctor both younger than the version she was travelling with, she nicknamed the elder "Indigo Jones" on account of his blue coat. (AUDIO: The Wrong Doctors)
