Caernarfon castle was rebuilt by Sir Llewelyn Turner

Sir Llewelyn Turner was also the man behind the transformation of a dilapidated Caernarfon castle and building the town's harbour and dock.

Caernarfon Civic Society has decided to pay tribute to his contribution by marking the 100th anniversary of his death in September 2003.

At the society's March meeting, it was agreed to commission a plaque in his memory for a large slab of slate in a prominent spot in the historic town.

Sir Llewelyn is credited with restoring Caernarfon castle to its former glory when it had deteriorated into a crumbling wreck in the early 19th century.

Sir Llewelyn worked tirelessly to clear the town of the disease by providing better housing and a clean water supply Glyn Evans, Caernarfon Civic Society

The benefactor was the castle's deputy constable and the town's mayor and paid for the work out of his own pocket.

But his most important achievement is considered to be eradicating cholera from Caernarfon.

Glyn Evans, chairman of Caernarfon Civic Society, said: "There were many slum areas in the town at that time and coupled with a lack of clean water this resulted in a cholera outbreak in 1866.

"Sir Llewelyn worked tirelessly to clear the town of the disease by providing better housing and a clean water supply.

"The fountain that used to stand on Castle Square was paid for by the people of the town to commemorate the arrival of fresh water," he said.

"It was Sir Llewelyn's ambitious ideas that brought the important facilities to Caernarfon," he added.

Sir Llewelyn Turner is to be remembered

The society is eager to show an appreciation of what he did for the town.

"A memorial of some kind would be particularly fitting," said Mr Evans.

"We are not thinking of a statue but more of a plaque placed on a large rock located in a prominent position within the town - possibly on Castle Square.

"We have already held a meeting with other organisations which Sir Llewelyn himself had been involved with when he was alive."

These include the town council, Harbour Trust and the Royal Welsh Yacht Club.

The society will now look at the possibility of including the memorial in the redevelopment of the square or the Victoria Dock.