Edward Purkis Frost
Edward Purkis Frost (1842 – 1922) was a British aviation pioneer.
Frost lived at West Wratting Hall in Cambridgeshire and became a Justice of the Peace.
Frost began studying flight in 1868 and built a large steam-powered flying machine with both fixed and flapping wings. Frost had intended to have a 20-25 hp steam engine but the actual engine with 5 hp was not powerful enough to lift the ornithopter from the ground. In collaboration with several colleagues he started another large similar craft in 1902 with a petrol engine. It lifted from the ground in 1904. A wing from this craft is displayed in London Science Museum. Photo here.
Frost had been a member of the Aeronautical Society since 1875 and became its president from 1908 to 1911.
The above information is condensed from the Wikipedia entry, accessed 28 Feb 2020.