George Raymond Orford Muff, 2nd Baron Calverley (1914–1971)
Charles Rodney Muff, 3rd Baron Calverley (b. 1946)
The heir apparent is the present holder's son the Hon. Jonathan Edward Muff (b. 1975)
Coat of arms of Baron Calverley
Crest
In front of two miners’ picks in saltire a miner’s safety lamp all Proper.
Escutcheon
Azure within two barrulets wavy Argent between in chief a rose of the second barbed and seeded Proper and in base a fleece Or three ducal coronets of the last.