1822 - 1885Person Name: E. StephenHymnal Number: 71Composer of "TANYMARIAN" in Hymnau a thonau at wasanaeth amrywiol gyfarfodydd y cysegrAlso Edward Tanymarian, or simply Tanymarian.
1857 - 1942Person Name: Alfred P. MorganHymnal Number: 92Composer of "CEFN-BEDD LLEWELYN" in Hymnau a thonau at wasanaeth amrywiol gyfarfodydd y cysegr
1796 - 1857Person Name: Parch. J. JonesHymnal Number: 4Composer of "TAN Y CASTELL" in Hymnau a thonau at wasanaeth amrywiol gyfarfodydd y cysegrSee also in:
Wikipedia
Also known as John Jones, Talysarn
1839 - 1921Person Name: J. Thomas, LlanwrtydHymnal Number: 47Cyng. of "LLYWARCH" in Hymnau a thonau at wasanaeth amrywiol gyfarfodydd y cysegrAlso:
Thomas, John, Llanwrtyd, 1839-1921.
Person Name: W. R. JonesHymnal Number: 109Composer of "BLODWEN" in Hymnau a thonau at wasanaeth amrywiol gyfarfodydd y cysegrWelsh and English Hymns and Anthems (1979) lists him as William R. Jones, Chicago (Hymn #60).