- Category : 1876-births
- Type : PM
- Profile : 6/2 - Role Model / Hermit
- Definition : Single
- Incarnation Cross : LAX Education 1
Scottish railway engineer noted as one of Britain's most famous steam locomotive engineers, he rose to become Chief Mechanical Engineer (CME) of the London and North Eastern Railway (LNER). He was the designer of some of the most famous steam locomotives in Britain, including the LNER Class A1 and LNER Class A4 4-6-2 Pacific engines. An A1 Pacific, Flying Scotsman, was the first steam locomotive officially recorded over 100 mph in passenger service, and an A4, number 4468 Mallard, still holds the record for being the fastest steam locomotive in the world (126 mph).
Gresley's engines were considered elegant, both aesthetically and mechanically. His invention of a three-cylinder design with only two sets of Walschaerts valve gear, the Gresley conjugated valve gear, produced smooth running and power at lower cost than would have been achieved with a more conventional three sets of Walschaerts gear.
Gresley was appointed CBE in 1920 and was knighted in the 1936 Birthday Honours. He died on 5 April 1941 after a short illness in Watton-at-Stone, Hertfordshire.