George Cokayne
George Edward Cokayne, FSA , was an English genealogist and longserving herald at the College of Arms in London, who eventually rose to the rank of Clarenceux King of Arms. He wrote the authoritative and standard reference works The Complete Peerage and The Complete Baronetage.
Cokayne was born onApril 1825, with the surname Adams, being the son of William Adams by his wife the Hon. Mary Anne Cokayne, a daughter of Viscount Cullen. He was baptised George Edward Adams. OnAugust 1873 he changed his surname by Royal Licence to Cokayne.
Source: Wikipedia