Rowland Huw Prichard (alt Rowland Hugh Pritchard) was a Welsh musician. Prichard is remembered today as the composer of the hymn tune "Hyfrydol", to which the hymn "Alleluia! Sing to Jesus", with words by William Chatterton Dix is generally sung. He is buried at Saint Peters Church, Holywell, Flintshire.
https://en.wikipedia.org/wiki/Rowland_Prichard