I have an inscription on a h/stone. Could be a relative to your William.
Northern Cemetery, Dunedin, New Zealand.
2579. (class 1) Lot 23 Block 103
TONDUT Claude Paul Charles Maurice
Died Oct 1 1882, aged 39 years, of Heart Disease. Hotelkeeper, resident of Albany Street. Born France, 6 years in New Zealand. Last came from Melbourne. Buried Oct 3 1882.
Informant John Simpson.