Templeton's tongue-in-cheek classical parodies made him a favourite of the American radio audience through the late 1930s and 1940s, with guests on his shows including Pearl Bailey. He also pioneered early tape-manipulation recordings, releasing "Magic Piano" and "Smart Alec" using techniques akin to Les Paul's multi-speed guitar recordings.

Bell's middle name, Piran, references the patron saint of Cornwall, though he was born and spent his earliest years in Cardiff before the family later moved and he grew up largely in Oxford, where his musical career began. He has also spent time based in Sweden and now lives in London.

Cochrane's 1972 book "Effectiveness and Efficiency: Random Reflections on Health Services" argued for the systematic use of randomised controlled trials to guide medical practice. Five years after his death, this call led to the founding of the Cochrane Collaboration, whose UK Cochrane Centre opened in Oxford, with the Cochrane Library and Cochrane Reviews now central to evidence-based medicine worldwide.

Beyond his band and solo singing work, Parsons has recorded well over 190 audiobooks and become an established voice-over artist for commercials and computer games, frequently working with production house Molinare in Soho. He remains an active, working performer based in the Vale of Glamorgan.

Jones remains the only Welsh boxer to have won a Silver Medal at the European Junior Championships, an early sign of the talent that trainer Pat Thomas would go on to develop through the 1990s. His world title win over Wilson Palacio at London Arena in December 1997 was scored a clean sweep on the judges' cards (116-112, 118-110, 118-110).

The circumstances of losing his title remain a point of sympathy among Welsh boxing fans: Jones was never beaten for the WBO belt, but had his licence revoked by the British Boxing Board of Control in 1998 after doctors flagged an anomaly on a brain scan - a medical, not sporting, decision. He returned to the ring under different jurisdiction but was stopped in the eighth round by the hard-hitting Acelino Freitas in January 2000, a defeat that brought his career to a close. He has remained closely involved in the sport ever since as a boxing analyst and commentator.

Botterill is remembered for performing in full Welsh national costume, a distinctive tradition of the Welsh triple harp, and for having taught a number of harpists who went on to notable careers of their own, though the individuals concerned have not been independently identified.

Morris appeared in numerous television mini-series through the 1970s, 1980s and 1990s, including 'David Copperfield', 'I, Claudius' and 'Belonging'. She died on the 1st of March 2018.

Josephson's 1962 prediction of quantum tunnelling between superconductors, made while still a research student, became a foundation of superconducting electronics and remains central to precision measurement and quantum computing today.

Budgie were rated among Wales's best rock bands of the 1970s, touring internationally and building a cult following that has continued to grow since. Shelley's songwriting partnership with guitarist Tony Bourge produced the material that Metallica would later champion, and he continued performing and recording with various line-ups of Budgie into the 2000s, remaining a respected and much-loved figure on the Cardiff music scene throughout his life.

Cerys is a member of the Sinfonia of London and appears regularly as Guest Principal with the Royal Liverpool Philharmonic Orchestra. She continues to pass on her craft as a teacher at both the Royal Welsh College of Music and Drama in her home city of Cardiff and the Guildhall School of Music and Drama in London.

Beyond music, Church has worked as a television presenter and actress, and became known as a prominent political and social activist, notably as a vocal campaigner during the UK phone-hacking scandal. She has sold more than ten million records worldwide across her classical and pop careers.