John Cayo Evans was a Welsh

Welsh people

The Welsh people are an ethnic group and nation associated with Wales and the Welsh language.John Davies argues that the origin of the "Welsh nation" can be traced to the late 4th and early 5th centuries, following the Roman departure from Britain, although Brythonic Celtic languages seem to have...

mathematician and academic.

Life

Evans was born on 1 March 1879 (St David's Day) and educated at St David's College School, Lampeter

Lampeter

Lampeter is a town in Ceredigion, South West Wales, lying at the confluence of the River Teifi and the Afon Dulas.-Demographics:At the 2001 National Census, the population was 2894. Lampeter is therefore the smallest university town in both Wales and the United Kingdom...

, Wales. He then studied at University College, Aberystwyth and Jesus College, Oxford

Jesus College, Oxford

Jesus College is one of the colleges of the University of Oxford in England. It is in the centre of the city, on a site between Turl Street, Ship Street, Cornmarket Street and Market Street...

. At Oxford, he obtained first-class degrees in Mathematics (1901) and Natural Science (1903). He was a member of the Indian Educational Service from 1905 to 1922 before being appointed Professor of Mathematics at St David's College, Lampeter (later renamed the University of Wales, Lampeter). He was High Sheriff of Cardiganshire

High Sheriff of Cardiganshire

The office of High Sheriff of Cardiganshire was established in 1541 since when a High Sheriff was appointed annually until 1974 when the office was transformed into that of High Sheriff of Dyfed as part of the creation of Dyfed from the amalgamation of Cardiganshire, Carmarthenshire and Pembrokeshire...

 for the year 1941 to 1942. He died on 8 March 1958. One of his two sons was the political activist Julian Cayo-Evans

Julian Cayo-Evans

William Edward Julian Cayo-Evans , was a Welsh political activist and one time leader of the Free Wales Army.-Life:...

.