HARROLDSTON, or EAST-HARROLDSTON (ST-ISSELS), a parish, in the hundred of RHOS, county of PEMBROKE, SOUTH WALES, 11 mile (S. E. by S.) from Haverfordwest, containing 304 inhabitants. This parish, which is pleasantly situated on the bank of the western Cleddau, appears to have derived its name from Harold, the founder of an ancient family of distinction, that for several generations occupied an old seat here, which, by marriage with Alice, daughter and sole heiress of Sir Richard Harold, passed to the family of Perrot, ancestors of Sir John Perrot, Lord Deputy of Ireland in the reign of Elizabeth, and first high sheriff of this county, who was a native of this place: the ancient mansion is now in a very dilapidated condition. Fern Hill, the seat of Sir Henry Matthias, Knt., is pleasantly situated on the bank of the river Cleddau, and surrounded by thriving plantations. The living is a perpetual curacy, in the archdeaconry and diocese of St. David's, endowed with £800 royal bounty, and £400 parliamentary grant, and in the patronage of James Higgon, Esq. The church is dedicated to St. Ishmael. There is a place of worship for Wesleyan Methodists. The hermitage of St. Caradoc, it is said, was in this parish; and on the common within the limits of which the Haverfordwest races are held is a well, still called St. Caradoc's Well, round which, till within the last few years, a pleasure fair, or festival, was annually held, for the celebration of rustic sports. The average annual expenditure for the support of the poor is sE 50. 14.