"I'll miss so much of this amazing man," life partner Alison McKenzie told the packed hall that spilt onto the grass outside.

She recounted his generosity to feed a homeless man in Tamworth, and that he was on a first-name basis with the shoe shiner in the middle of Sydney, after a visit for the second time.

"He rang me and said, 'You know the shoe shine man in Pitt St mall, he remembered me'," Alison joked.

"Of course he remembered you Glen because you are unforgettable."

More than a dozen nearest and dearest took to the floor of the hall.

They remembered the father of two, the brewer, the cook, the pianist, the touch footy player and the joker who made sure he stopped to smell the roses everyday.

"Glen did as much as he could every day of the week, every week of the year," university and college friend Paul Bordignon recalled.

Saturday was the final goodbye to the 51-year-old father and Office of Environment and Heritage (OEH) officer, shot dead near Moree.

Ian Turnbull, a 79-year-old farmer, is now accused of murdering Mr Turner in a hail of five gunshots, three of which hit him.

The crowd at the service, including NSW Environment Minister Rob Stokes and OEH chief Terry Bailey, was told the tales of the eternal optimist with a great sense of humour.

Friends joked about  his knack for inventing nicknames, and told how he shared a long list of identities coined throughout a life spanning from Telegraph Point to university in Newcastle, Sydney, overseas and Tamworth.

He was christened Glendon, but he was also Boy, Jack, Joe, Emu, GT and Teddy.

"He was the Darryl Kerrigan of the P&C, he was an ideas man," Tamworth Public School principal Lee Preston recounted of Glen's three-year stint as P&C president.

"Some of these ideas were brilliant and some were bloody bizarre, and sometimes I had to tell Glen he was dreamin'."