Together they became the parents of Wilfred Mills Greentree, Sidney Arthur Greentree,
Kelvin Lawrence Greentree, Clifford J. Greentree, Gordon Hollis Greentree, Nonie Greentree and one other daughter.
Nellie passed away on August 2, 1937 in Windsor, New South Wales  and was buried in an unmarked grave at Wilberforce Cemetery.
↑NSW Government: Justice Registry of Births, Deaths & Marriages Marriage Reg. No. 5849/1904 registered at Sydney (familyhistory.bdm.nsw.gov.au [on-line database; no image]). | GREENTREE | ARTHUR H | HAYWARD | NELLIE I | SYDNEY
↑NSW Government: Justice Registry of Births, Deaths & Marriages Death Reg. No. 16375/1937 registered at (familyhistory.bdm.nsw.gov.au [on-line database; no image]). | GREENTREE | NELLIE ISABEL | JOHN | GERTRUDE | WINDSOR
The death occurred In Windsor Hospital on Monday Inst. of Mrs. Nellie Greentree, wife of Mr. Arthur Greentree, of Wilberforce, at the age of 54 years. Deceased, who was the eldest daughter of the late Mr. John and Mrs. Maria Hayward, of Wilberforce had been ailing for several years. Besides her husband there are five boys and one girl to mourn their loss. Mr. H. H. Hayward, of Penrith, and Mr. Clyde Hayward, of Ardglen, are brothers of deceased. The funeral took place at Wilberforce on Tuesday.