Notes
This is the form recommended in the national standard reference work, A Gazetteer of Welsh Place-Names (University of Wales Press, 1967). One should not deviate from its recommendations without good reason.
According to the rules of Welsh orthography s should be followed by the consonant b not by the consonant p. It is not easy, however, to hear the difference between the combination sp and the combination sb in speech (compare ysbyty/yspyty).
