Demosthenes was the middle name of Georgios Savalas (Telly Savalas's brother) who played Detective Stavros in 'Kojak'. At the time the second series of 'Kojak' was being produced, the actor did not want it to be generally known that he was Telly's brother in case accusations of nepotism were levelled. Georgios Savalas therefore gave his middle name (and ONLY that) for use in the opening credits of the programme. In later series, he is credited as 'George Savalas', having anglicized his first given name for the purpose.