William Nugent (1550–1625) was a Hiberno-Norman Irish rebel in the 16th century Kingdom of Ireland, brother of Christopher, fourteenth baron of Delvin, and the younger son of Richard Nugent, thirteenth baron of Delvin, from whom he inherited the manor and castle of Ross in County Meath. His mother was Elizabeth Preston, daughter of Jenico Preston, 3rd Viscount Gormanston, and widow of Thomas Nangle, feudal Baron of Navan.

Sir Christopher Nugent, 6th Baron Delvin (1544–1602) was an Irish nobleman and writer. He was arrested on suspicion of treason against Queen Elizabeth I of England, and died while in confinement before his trial had taken place.