This collection features hundreds of thousands of index cards, 455,695 to be precise, created by the Society of Antiquaries. They link coats of arms to family names between 1150 and 1850.
Each card includes descriptions of coats of arms and associated genealogical details, such as names and dates(of birth?). According to the description, occupations, family connections, and other things may also be included. The small sample I viewed showed none of these.
This card collection was the basis for the Dictionary of British Arms, published in four volumes, which appear to be freely available through the Internet Archive.