The film's makers discovered Mr Walters' body had been lying in an unmarked grave in Cardiff, without a single memorial.

Bart Wilson - founder of Cardiff City

And, remarkably, during the filming, the original headstone was also found, lying where it had fallen in the undergrowth decades earlier.

Walter Bartley Wilson was the founder of a team of Riverside cricketers some time in 1899 which eventually became Cardiff City FC.

The disabled lithographic artist, who was from Bristol, worked tirelessly to bring football to Cardiff.

BBC Wales sports reporter Jason Mohammed uncovers the history of the Bluebirds

Despite being born with a club foot Mr Wilson took on the game's governing body to ensure Cardiff City would become the first professional club in the Welsh capital in 1908.

In 1920 City joined the football league and four years later failed to win the First Division championship by just 0.024 of a goal.

After losing 1-0 in the 1925 FA Cup final the Bluebirds returned in 1927 and created history becoming the first and only team to take the FA Cup out of England by beating Arsenal 1-0 at Wembley.

Bart Wilson's grave was hidden for 45 years

Now freelance broadcaster and journalist Grahame Lloyd has written a book celebrating Cardiff City's centenary and the role of Mr Wilson.

The book C'mon City! A hundred years of the Bluebirds and programmes on BBC Wales television and Radio Wales recall the history of the club through some of their most loyal supporters.

Among those contributing include poet Dannie Abse, former striker Brian Clark, record appearance holder Phil Dwyer, former chairman Tony Clemo, supporters' club organiser Sue Goodfriend and the club's oldest surviving player Eddie Jenkins.