An amazing collection of digital images. Note that in Advanced Search, you can limit by country and range of dates (say 400 to 1400 C.E.). Or try the Illuminated Manuscript or Paintings Collection.
A bit difficult to search, but worth the effort. Use quotation marks around your search terms, and limit the "Type" to "Article." and History journals.
Books in the Library's First Floor Reference Section (Cannot be borrowed)
Dictionary of National Biography
Call Number:
Library First Floor - Reference Collection - DA 28 D47
If you have identified the figure on seal as a Brit, this set of books will probably have a biography of your person
Oxford Companion to Christian Art and Architecture
Call Number:
Library First Floor - Reference Collection: N7830 .M87 1996
Publication Date: 1996
A useful source for short biographies and definitions.
Describes the origins, history, and meaning of a variety of signs and symbols that appear in art, literature, mythology, and religion, covering more than two thousand symbols, figures, and themes and drawing from classical myth, biblical text, and other traditional and cultural items.
Focusing on the Frankish realm between the eighth and twelfth centuries, Constance Brittain Bouchard outlines the operative definitions of "family" in this period when there existed various and flexible ways by which individuals were or were not incorporated into the family group. Even in medieval patriarchal society, women of the aristocracy, who were considered outsiders by their husbands and their husbands' siblings and elders, were never completely marginalized and paradoxically represented the very essence of "family" to their male children.
This site might be helpful in determine what type of seal you have: royal, municipal, religious, etc. The Durham Cathedral Muniments, now in the care of Durham University Library Archives & Special Collections, are one the richest British archives for surviving medieval seals.
The Handbook to English Heraldry
by
Charles Boutell
Good Impressions is an exhibition catalog for the show at the British Museum that showcased its collection of seals. The essays in this catalog address why and who used seal from 1100-1540 AD.
This text provides an overview of Medieval art and includes references that help you focus more directly on a specific time period. It is also a beautiful book to look at!