Hi Raylene & Bill

I found her - Iris is buried at the Gympie Cemetery Qld

She is buried under Watts - so you may need to look for her Death certificate under Watts.

GYMPIE Cemetery
Registration No: 15555
Date of Service: 11th January 1972
Location: PPC-9-101
WATTS Iris Vilinda (known as Milton)

Also found possible for Vernon WATTS - if you contact the Gympie Times they may have death notices which may have relatives names etc.

GYMPIE
WATTS, Vernon James. Funeral Service to be held in the Cooloola Coast
Crematorium Chapel, 236 Brisbane Road, Gympie at 10:00a.m. Gympie Funeral
Services 54828400
Location: Gympie | Published Date: 03 Feb 2009

RYERSON INDEX
WATTS Vernon James
Funeral notice27JAN2009
Death age 79 at Winston House Retirement Centre, late of Gympie, formerly of Gunalda
Gympie Times 31JAN2009

Cheers
Tania