William Ormsby married Hannah (née Wynne). Their son Owen Ormsby (1749 - 1804) had one daughter with Margaret Owen, Mary Jane. Mary Jane married William Gore on 11th January 1815 and they became the first Ormsby-Gores, which henceforth was the family name of the Baron Harlech title.
William and Hannah had one son and three daughters, two of whom were depicted by Tonelli. The youngest, Lucy, may not have survived to the time, circa 1780, when this set of pastels were painted.
William was MP for County Sligo. He is mentioned as a gentleman farmer in the Census of Elphin in 1749 and the Ormsby family clealry had a substantial estate. In the 1870s they are recorded as having 21,019 acres in county Sligo, 7,480 acres in county Leitrim, 1,174 acres in county Mayo and 172 acres in Roscommon.
Collection of Lord Harlech, Glyn Cywarch, North Wales
Portraits from Welsh Houses, exh. cat., Wales, 1948, p.32, cat. no. 84
J. Steegman, A Survey of Portraits in Welsh Houses, Cardiff, 1957, vol. I, p. 76, no. 66 and 67 (under Portraits formerly at Brogyntyn);
N. Jeffares, Dictionary of Pastellists before 1800, London, 2006, p. 519, N. Jeffares, Dictionary of Pastellists before 1800, online, no. J.722.146 and J.722.147.
Cardiff, National Museum of Wales, Portraits from Welsh Houses, 1948, cat. no. 84.