Morphology: possibly tir + the name Philip
Phonetic: tea-rr-phil
Because the name means "Phillip’s land", the settlement is often thought to be named after Nehemiah Phillips, of the Powell Duffryn Steam Coal Company Ltd, as was nearby Phillipstown. The settlement was actually recorded as Tir Phil in 1841 however, four years before Nehemiah Phillips was born and so could possibly refer to an earlier family member. Also shown as Tyr Phil on a map of Glamorganshire printed by Eyre and Spottiswoode of London in 1885.