[2] His eldest legitimate son, the second Baron, represented Bodmin in the House of Commons and served as Lord Lieutenant of Cornwall.
The latter's great-grandson, the sixth Baron, was a soldier and a Conservative member of the House of Lords.
A number of Vivian family graves with Celtic-style headstones can be found at the Parish Church of St Winnow.
The heir presumptive is the present holder's first cousin, Thomas Crespigny Brabazon Vivian (born 1971).
The heir presumptive's heir-in-line is the present holder's third cousin once removed, (Christopher) John Desmond Vivian (born 1956), a great-great-grandson of the 2nd Baron.