Findings:

• TAF
• tafs (user)
• taff (user)
• Rhondda Cynon Taff
• River Taff
• Welshman
• Welshman (user)
• Sober Welshman (user)

If you Log in you could create a "Taff the Welshman" node. If you don't already have an account, you can register here.