Walter Charles Brook

I am looking for details on Walter Charles Brook, born 19.11.1898, Parnell, Auckland, New Zealand. Parents were Walter Augustus Brook and Lucy Beatrice Brook (nee Levett). Walter Charles Brook had two younger sisters, Thelma Beatrice Brook and Mabel Edith Brook. Walter Charles Brook's father Walter Augustus Brook died at 36, and his wife Lucy Brook remarried, Charles Henry Driver in New South Wales on 23 June 1917. Charles and Lucy Driver had a daughter, Rosetta Louise Driver (who married Roulston Normyn Monger, NSW in 1945)

Walter Charles Brook, married Gladys Caroline Irene Burton on 9.4.1917, and they had a child Viola Beatrice Brook (married name Roser). The marriage was dissolved in Wellington New Zealand on 15.9.23. From this time we have no record of Walter Charles Brook, and my grandmother Viola (his daughter)would dearly love to know what happened to her father. Any leads would be appreciated in finding Walter Charles Brook.