I Am Looking for Descendants of Grace Jane Park George Arthur

Grace Jane Park born 1877 in Kumara, Westland, New Zealand and married George Arthur 17 July 1902. They had five children, their names are Keith Douglas Arthur b1903, Gavin Alexander Arthur b1904, Nettie Arthur b1906, Dorothy Jean Arthur b1910, Gregory Stuart Arthur b1915. Grace Jane Park is the granddaughter of my 3rd great grandparents Gavin McIntyre Park and Grace Jane Stobie Park. I would like to know more about Grace's family and her descendants. I do have some photos of her siblings. Please contact me on flight3@xtra.co.nz