Eric Dillon, 19th Viscount Dillon

Brigadier Eric FitzGerald Dillon, 19th Viscount Dillon, CMG, DSO (1881–1946) was an Irish peer and British Army officer who served in World War I.

He and his wife, Nora Juanita Muriel (née Beckett), had two children. Their son, Michael Eric Dillon, succeeded his father as the 20th Viscount Dillon. Their daughter, Pamela, married the 6th Earl of Onslow (that marriage was dissolved in 1962).

Lady Onslow
Pamela Louisa Eleanor Dillon (born 26 August 1915 – died 1992), who had held the office of Justice of the Peace for Guildford in 1950, married the 6th Earl of Onslow on 4 August 1936, several weeks before her 21st birthday. The marriage was dissolved by divorce in 1962. The couple had two children: William Coplestone Dillon Onslow, 7th Earl of Onslow (28 February 1938 – 14 May 2011), and Lady Teresa Lorraine Onslow (born 26 February 1940). Teresa Onslow married Catholic writer/editor Auberon Waugh, the son of Evelyn Waugh, making the 6th Earl of Onslow and Lady Pamela Waugh's parents-in-law. Auberon and Teresa Waugh had four children.

Lady Onslow was involved in the Littlejohn Affair, a spy scandal involving an alleged MI6 double agent, Kenneth Littlejohn, whom she had met when visiting prison in the 1960s. She reportedly introduced Littlejohn to the British security forces who later used Littlejohn in anti-IRA operations.

In 1975, Pamela, Lady Onslow, received a letter bomb which fortunately failed to detonate properly, causing only minor injuries. She reportedly declined hospital treatment for the injuries. Lady Onslow died in 1992, aged 76 or 77.