Horace's elder brother, the 2nd Earl of Orford (c.1701–1751), passed the title on to his son, the 3rd Earl of Orford (1730–1791).
Fratele mai mare al lui Horace, al 2-lea Conte de Orford (c.1701-1751), a trecut titlul fiului său, al 3-lea Conte de Orford (1730-1791).