Capt. Thomas writes proudly of his record-holding dog in his seminal book The Welsh Terrier (Daergi Cymraeg) Handbook: “Then came 1951 which was a particularly memorable year for me, as at the National Terrier Club Championship Show, held at Olympia on 18th January, the Welsh Terrier bitch ‘Twynstar Dyma-Fi,’ owned by my wife and I, was best exhibit of all breeds in the show. She was bred by Mr. T. M. Jones of Dowlais, and was handled by my good friend Mr. George Barr, the judge being Capt. R.S. de Quincey. The president of the National Terrier Association, Her Grace Kathleen, Duchess of Newcastle, presented the magnificent silver cup, which award has never been won before or since by a Welsh Terrier….
Ch. Twynstar Dyma-Fi, ‘Trixie’ (b. 1948), handled by Mr. George Barr, won Best In Show out of an entry of 11,625, comprising 5,443 dogs, at Crufts on February 11, 1951. After her win, many offers were made to acquire her, one being among the highest offers ever made for a Welsh Terrier. These were turned down, however, “for sentimental reasons,” and she became the house pet of Capt. and Mrs. I. Morlais Thomas.*