Daily Trojan was created in 1912.

A Trojan Horse is not a specific virus; rather, it is a name for several more violent viruses. Most Trojan horses are detectable, depending on which Anti-Virus software you use, however new ones are created daily, and it's impossible for anyone to keep up.

The Trojan horse was pulled into Troy, hence 'Trojan'.

'you need a Trojan horse to create a Trojan virus'

LOL , Trojan Horse itself is a Virus !

W32/AutoIt Trojan and its variants

VirusW32/Delf Downloader Trojan and its variants

VirusW32/OnLineGames Password Stealer Trojan and its variants

VirusW32/Agent Dropper Trojan and its variants

W32/Agent.ENU.Dropper is a Trojan. The Trojan will infect Windows systems.

VirusW32/Peacomm Trojan and its variants