page 400 from the book history of Limerick
James O'Gorman (who was the fourth son of Daniel O'Gorman and Mary Roche, daughter of Philip Roche of Limerick), was born in the Castle of Bunratty,
Co. Clare, in 1681 ; he lost his property, and went to live in Limerick in 1724, where he married Christina Harold, third daughter of Thomas Harold and Alicia Enraght. He died in 1736. He had three sons and one daughter. His second son Thomas was born in 1724, and went to England in 1747, to claim for his relative Mrs Margaret Daly Walsh, estates, as heir-at-law to Sheffield Duke of Buckingham, and succeeded in establishing her right. He afterwards established himself as a merchant in London; He died in 1800, and the mercantile house, a somewhat eminent one, was continued under the firm of Goman Brothers. He had fourteen children. The period at which he dropped the 0' was after he went to London. The names of his sons were Edmond Sexton, Alicutbouse, Thomas Harold, James (Michael Arthur), William, Sivester, Charles, James Denis Charles, Thadeus, and George. It was James, we believe, that gave evidence for Mr. Arthur. Edmond A. Gorman, Esq. of east Berghall, Suffolk, represents this family.
Thomas Harold, James was Mervyns Grandad and was rich, so its fair to say that Mervyns dad was also wealthy