Community stalwart, benefactor and gentleman Douglas Mackay Webb OAM died from cardiac arrest on April 19 at Orana Gardens aged care facility a month short of his 90th birthday.

His lifetime companion and sibling who he always called "sister", Barbara Jane Webb OAM, died in Dubbo in October 2012 at the age of 88.

The brother and sister shared a home in the city of Dubbo for more than three decades during which time they invested incalculable volunteer hours and money in organisations and individuals without seeking recognition or fanfare.

The Webbs had previously owned 'Yallamba' on the outskirts of Dubbo after selling 'Bukulla' near Goodooga, a property they co-owned and operated.

On the death of his sister, Douglas Webb told the Daily Liberal that "she's a hard one to replace".

Community members and close friends are now saying the same of the former agri-politician.

Douglas Webb's life on the land in Western NSW was complemented by a long and productive period in agri-politics.

He had an authoritative presence in agricultural organisations including the NSW Farmers' Association and the Wool Council of Australia.

In 1980 he received a Medal of Honour from the association and in 1990 a NSW Department of Agriculture Centenary Award for service to the wool industry.

In the late 1980s, after stepping down from the association's executive, Mr Webb identified the introduction of the objective measurement and the wool reserve price scheme as milestones in his agri-politics career.

The awarding of a Medal in the Order of Australia in the General Division on Australia Day 2006 acknowledged his contribution to the rural sector and organisations such as the Royal Flying Doctor Service, the National Trust through historic Dundullimal Homestead and Taronga Western Plains Zoo.

A faithful and hard-working member of The Nationals, Mr Webb enjoyed cricket, rugby, bowls, horse racing and worldwide travelling with "sister" during his lifetime.

"He was a great raconteur and an exceptionally generous man with both time and assistance to organisations and individuals," said a close friend of Mr Webb.

"He touched lives through kindness and generosity. Friends and beneficiaries are too numerous to name."

Mr Webb's generosity extended into the final months of his life when a move to Orana Gardens prompted the distribution of treasured possessions.

"Douglas won the first Dubbo Cup with Pinkinbah and has donated the trophy and memorabilia to the museum at Western Plains Cultural Centre," his friend said.

Mr Webb's death notice in the Daily Liberal refers to him as a "dear friend to many".

His cremation service is in the hands of Abbey Funeral Home.

The service will be held in the Chapel of Dubbo City Crematorium, on the corner of Moffatt Drive and Yarrandale Road, on Tuesday (April 26) from 10.30am.

A wake will follow at the Macquarie Club where Mr Webb paid tribute to his sister less than four years ago.