Mcdonnell from Picton New Zealand

My g grandfather John McDonnell had 2 brothers Hugh Augustus and Walter Arthur McDONNELL. He also had two sisters Elizabeth Emma (TAYLOR) and Martha Ann (CREIG)

I understand they were in the Picton area.

I do not know if he had a spouse.
John had a son Llewellyn William Robert John URRY. Why the different surname I do not know. Was there any more children I do not know.

Any body connect with this information.

Regards
Yvonne