The records of the Genealogical Office can be a useful resource for family historians. A coat of arms is granted and belongs to an individual, not to a family or surname, and may be borne by only one person at any time. Its correct use by direct descendants of the original grantee is subject to a system of marks of difference applied to the coat of arms. Because of this, a grant, confirmation or certificate of arms usually contains some genealogical information about the grantee.
Genealogical Office manuscripts which can be helpful in researching a family history include documents relating to grants and confirmations of arms and registered pedigrees, as well as material such as will abstracts which were collected for research purposes.
You can search the Sources database and the Consolidated index to the records of the Genealogical Office for heraldic records of interest.