Morphology: supposedly tref+the saint’s name Cenydd
Phonetic: treh-kenn-ith
This post-war housing estate settlement takes its name from the church dedicated to Saint Cenydd. The local church and comprehensive school have also taken the saint's name, however the name Senghenydd derives from the personal name Sangan and the suffix "-ydd" in Welsh. It is possible that the spelling of Senghenydd as Seint Genith in 1326 has led to many believing that the name comes from a person called Saint Cenydd.