[8] Both captained Cardiff and Wales, made their international debuts in 1947, and were on the Lions squad that toured Australia and New Zealand in 1950.
Williams, nicknamed the "Prince of Centres", earned 22 caps for Wales and five for the Lions in an eight-year Test career.
Matthews, renowned for his strong tackling, earned 17 caps for Wales and six for the Lions, calling time on his Test career in 1951.
[8] Named the greatest Welsh player of the 1950s by the WRU, Cliff Morgan played 29 Tests for Wales,[9] and four for the British Lions between 1951 and 1958.
[11] He played during Wales' Five Nations Grand Slam of 1952, and their victory over the All Blacks in 1953,[12] but he is most famous for captaining the British Lions in South Africa in 1955.
[16] When Wales faced Australia on 3 December 1966, two future Rugby Hall of Fame members made their Test debuts; Gerald Davies and Barry John.
[20] Playing at fly-half, he helped Wales to a Five Nations Grand Slam in 1971, and then the Lions to their one and only series win over the All Blacks that same year.
His exploits on the Lions tour of 1971 were rewarded with the nickname of "The King" by the New Zealand press, though the pressure of expectation and fame saw him quit rugby the following year.
[21] Widely regarded as the greatest rugby union player of all time, Gareth Edwards played 53 Tests for Wales at scrum-half between 1967 and 1978.
[27] In 1969, three Hall of Fame members debuted for Wales; Phil Bennett, Mervyn Davies, and JPR Williams.
[33] Ieuan Evans played for Wales between 1987 and 1998, and in the process earned 72 Welsh caps while the nation was transcending the amateur and professional eras.