Boethius

According to Arnold Bocklin, a homeless guy used to "hang out" on Whitworth Street in Manchester.

Biography
Some time prior to 2005, the homeless man was found on Whitworth Street in Manchester. He once got into an argument with Tony Wilson. Arnold Bocklin knew of the homeless man and his habit of quoting poetry if given money. In 2005, Arnold wrote about the man on whoisdoctorwho.co.uk, noting his similarity to the Ninth Doctor. (PROSE: Have You Seen This Man?)

Behind the scenes
While not named in Have You Seen This Man?, the homeless man was implied to be in the 2002 film, a Roman philosopher who was merely disguised as a homeless man in the 1980s. Additionally, Boethius was portrayed by Christopher Eccleston.