As well as a ringer, he [Fred Rigby] was a competent musician, and played the organ and recorder. Amateur dramatics was another hobby activity with which he was much involved.

... performance of young Lucius (J F Rigby) and his singing to his own accompaniment on the lyre of the Elizabethan love song "Go to bed, sweet maid," which was both dainty and charming.

J F Rigby (1950) has been awarded a First, with Distinction, in Part III of the Mathematical Tripos at Cambridge.

J F Rigby (1950) has obtained the degree of Ph.D.

My grateful thanks are due to Professor P Hall, who suggested many of the following proofs to me during my period of research.

I owe him a debt of gratitude. ... in John's first year as a member of staff ... he gave wonderful lectures on Complex Analysis with his own inimitable blackboard sketches of complicated curves.  ... He told us that he had previously been working at GCHQ, finishing off his PhD while working there.  ... we tried to wheedle out of him what went on in this mysterious establishment, but John was typically tight-lipped - not a comma nor full-stop could be drawn out of him.

J F Rigby (1950) is part author with his father of 'Playing the Recorder' (Faber and Faber), a copy of which has been kindly presented to the Library.

Dr J F Rigby (1950), Lecturer in Pure Mathematics at University College, Cardiff, has been appointed Assistant Professor at the University of Toronto for 1963-64.

I should like to thank F A Sherk and the referee for their helpful suggestions.

John Rigby ... was an active member of the Mathematical Association from the day he joined in 1960, serving as President of the Cardiff Branch as well as its meticulous Secretary. He contributed many articles on Euclidean Geometry to the 'Gazette', which were distinguished by their precision, concise style and freedom from jargon. His elegant solutions to the Problem Corner reflected his encyclopaedic knowledge of results that most of us were not even aware of, and his regular talks at Mathematical Association Conferences were always a magnet of attraction.

... a worksheet was circulated to the schools a month before each meeting. At the meeting students were invited to present their solution on the blackboard. Although they often produced a technically correct solution, John would inevitably produce a far more elegant one, drawing gasps of admiration from the audience. His perfectly-drawn circles were indeed a wonder to behold.

1. Dr Rigby is amazing the way in which he explains and presents his material, is very methodical and he makes it extremely easy to understand! Why didn't we have him last year? ...

2. It's a pity that our other lecturers aren't as good as this. Maybe then more people would attend and enjoy it, rather than being bored!

John F Rigby is well-known in geometric circles. For example, Ross Honsberger's 'Episodes in Nineteenth and Twentieth Century Euclidean Geometry' (Mathematical Association of America, 1995) reserves a page on which special acknowledgment is given to John Rigby for his contributions to the book. Pages 132-136 introduce a Rigby point which serves as a seed for families of points in the 'Encyclopedia of Triangle Centers' [https://faculty.evansville.edu/ck6/encyclopedia/etc.html] beginning at X(2677). Two other Rigby points are indexed in the 'Encyclopedia of Triangle Centers' as X(1371) and X(1372).

He was a dedicated defender of wildlife and an ardent supporter of environmental conservation, as well as a keen rambler in the Lake District and along the canals around Manchester. John was also a devoted member of the Welsh Folk Dance Society and a regular participant in both Highland and Scottish country dancing. Indeed, his attraction to patterns led him to devise and publish dances, creating several for the Cardiff Caledonian Society.

John became a world expert in the connection between mathematics and 'ornamental art', and created his own designs and patterns.  His drawings were often shared with privileged friends as Christmas cards.  Many of the patterned 'kneelers' in Llandaff Cathedral were designed by John.  He also worked on other church textiles.  Every stitch was depicted on graph paper, and then translated into needlepoint by parish groups.

John was a dedicated defender of wildlife, and an ardent supporter of environmental conservation.  A keen rambler while health allowed, he loved the countryside, though the Manchester canals and the Thames also offered favourite places to walk. The Lake District was particularly dear to him. His pleasure on being taken by friends to enjoy fresh air in local parks during the last two years of his life was palpable. In their turn, those friends took pleasure in the strong sense of humour which had been with John from childhood. ...  John's acute powers of observation, his lack of self-pity, his sharp wit, the one-liners and repartee never left him. Even in his final, painful days in hospital, hardly able to speak, he nevertheless told a visiting friend, with the ghost of a smile, that he was 'not dead yet'.  John had disarming charm, and will be remembered with appreciation, affection, and respect by his many friends and colleagues at Cardiff University.