It was created on 5 July 1911 for Herbert Leon, a financier and Liberal Member of Parliament for Buckinghamshire North from 1891 to 1895.
Their son, the fourth Baronet, is the actor John Standing.
The Leon family owned Bletchley Park in Buckinghamshire between 1883 and 1937.
The heir apparent is the present holder's son, Alexander John Leon (born 1965).
The heir apparent's heir apparent is the present holder's grandson, Thomas Alexander Melford Leon (born 1998).