Viscounts Daventry (1943)
- Muriel FitzRoy, 1st Viscountess Daventry (1869–1962)
- Robert Oliver FitzRoy, 2nd Viscount Daventry (1893–1986)
- Francis Humphrey Maurice FitzRoy Newdegate, 3rd Viscount Daventry (1921–2000)
- James Edward FitzRoy Newdegate, 4th Viscount Daventry (b. 1960)
The heir apparent is the present holder's son Hon. Humphrey John FitzRoy Newdegate (b. 1995)
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