Hi Paula
I didn't get time to post earlier today but had found the Rose WHITLEY also.
(Miss) Agnes Cecilia WHITE (born in Ireland - probably Co. Wicklow) came to New Zealand as a young child with her parents, Thomas and Sarah Jane WHITE, and
three sisters.
[Edit: One of her three sisters appears to have been born in NZ c. 1862 ] Agnes remained a spinster and died in Auckland in 1937. [It was via her will that I had found mention of Rose WHITLEY.]
Her will makes interesting reading, the beneficiaries of whom were >
Harry Joseph FITZPATRICK
John George FITZPATRICK
Jack White FITZPATRICK
Rose WHITLEY
Agnes Cecilia FITZPATRICK
Joan Grahame WHITE
Jack White FITZPATRICK
Henrietta PURCHASE
Pansy WRIGHT [ Henrietta Mary PURCHASE & Pansy Hilda WRIGHT appear to have been sisters ]
Robert Thurlow WHITE
Owen Connor WHITE
Mary GRAHAME
[So some of the above names will be familiar to you ? ]
And yes, the Will of Agnes was challenged some years after her death (1941) ... there are newspaper reports of same.
I'll add the link for the Probate file, so you can read the Will. There is one rather touching letter from John George FITZPATRICK.

Had thought initially that there may have been some family connection between the FITZPATRICKs and the WHITEs, but having also viewed the Will of Sarah Jane WHITE, I think that is not the case.
~ Lu
Edit: ^ To add new information since found.