•
Sir David Llewellyn, 1st Baronet (1879–1940) •
Sir Rhys Llewellyn, 2nd Baronet (1910–1978) •
Sir Henry Morton "Harry" Llewellyn, 3rd Baronet (1911–1999) •
Sir David St Vincent "Dai" Llewellyn, 4th Baronet (1946–2009) •
Sir Roderic Victor "Roddy" Llewellyn, 5th Baronet (born 1947) The current
heir presumptive is his first cousin, Robert Crofts Williams Llewellyn (born 1952), eldest son of
Sir David Llewellyn. The current heir presumptive's
heir apparent is his son, Dominic Robin Crofts Llewellyn (born 1984), followed by the latter's son, David Join Crofts Llewellyn (born 2012), then by the former's uncle David Rhidian Llewellyn (born 1957) and then by his first cousin Trefor Wilmot Llewellyn (born 1947). There are no other heirs to the baronetcy. •
Sir David Richard Llewellyn of Bwllfa, 1st Baronet (1879—1940) •
Sir Rhys Llewellyn, 2nd Baronet (1910—1978) •
Sir Henry Morton Llewellyn, 3rd Baronet (1911—1999) •
Sir David St. Vincent Llewellyn, 4th Baronet (1946—2009) •
Sir Roderic Victor Llewellyn, 5th Baronet (born 1947) •
Sir David Treharne Llewellyn (1916—1992) •
(1) Robert Crofts Williams Llewellyn (born 1952) •
(2) Dominic Robin Crofts Llewellyn (born 1984) •
(3) David Join Crofts Llewellyn (born 2012) •
(4) David Rhidian Llewellyn (born 1957) •
Major William Herbert Rhydian Llewellyn (1919—2008) •
(5) Trefor Wilmot Llewellyn (born 1947) ==Llewellyn baronets, of Baglan (1959)==