Unlike other towns in the area which had a life as a staging post during the gold rush or serving rural communities, Clandulla seems to have sprung into existence with the arrival of the railway in 1884. The line was pushed through as far as Mudgee that same year.
It took a while for this fledgling town to settle on a name. The railway station began as Ilford but as the actual town of Ilford was 13 kms away that didn't seem suitable so it was renamed to Mornington 16 years later. But the locals apparently didn't like that name and within a couple of years had it renamed this time to Carwell but they didn't like that either so a couple of years later in 1905 is was renamed Clandulla and this time the name stuck.
Clandulla is the name of the parish but where did the name of the parish come from? I don't know.