John Patrick Hannan. The longest prison escaper.

The Longest Missing Fugitive John Patrick Hannan

The Unsolved Escape of John Patrick Hannan

Top 10 Prison Escapees Who Were Never Found

Patrick Hannan tells the story of Harry Cadwallader, blast furnaceman at the Ebbw Vale Steelworks

Patrick Hannan discusses south Wales words with Professor Gwyn Williams and Roy Roberts

SIGGRAPH 2017: Dell's Rahul Tikoo & Patrick Hannan