Where past and present blend
Here you'll find helpful links as you discover your medieval ancestry.
ANCIENT LINEAGE

Medieval Lands (Charles Cawley; Foundation for Medieval Genealogy)
An ambitious project, whose aim is to provide narrative biographical accounts of the royal and noble families of Europe in the medieval period. The aim is eventually to document the accounts from primary source material, but a number of them - including those for England after 1066 - are currently outlines based on secondary sources.
The Exciting Danvers Home Page (Philip Richards) Database covering just over a thousand individuals, many of them medieval
Community Trees (FamilySearch.org)
A number of genealogical databases compiled from various sources. They include British Isles: Peerage, Gentry and Colonial American Connections, Europe: Royal and Noble Houses (predominantly England and France), Residents of London, Norfolk Visitations, 1563 and Wales: Medieval Records Primarily of Nobility and Gentry.
Medieval Genealogical Registry
(Foundation for Medieval Genealogy)
A referenced database of medieval genealogy, in progress. The data are being compiled from high-quality sources, and are searchable by surname, place and date. Note that data for only a few persons have been included so far, for illustration purposes, but a significant number of sources - such as articles in periodicals - have been indexed
Graphical Index to the Ancestry of Charles II (Foundation for Medieval Genealogy) A hyperlinked set of chart pedigrees indexing the ongoing series of papers in The Genealogist entitled "A Medieval Heritage: The Ancestry of Charles II, King of England", by Neil D. Thompson and Charles M. Hansen
Leo's Genealogics Website (Leo van de Pas)
An extensive genealogical database containing more than 400,000 persons. Much of the emphasis is on medieval ancestry, as well as on modern royalty and nobility. The data are mostly taken from good-quality secondary sources, which are specified for each entry
Plantagenet Country: Ancestors of Elizabeth of York 1465-1503: Genealogies, portraits and brief biographies (Leo van de Pas/Brigitte Gastel Lloyd)
Listing of the ancestors of Elizabeth of York, with biographies and portraits for some individuals
Data base of the higher nobility in Europe (Herbert Stoyan)
Stevens/Southworth/Medieval Database (Jim Stevens)
Ford's Landed Gentry of Berkshire (David Nash Ford's Royal Berkshire History)
Database compiled from various sources, including nearly 10,000 individuals associated with Berkshire
RoyaList Online: A Royal Genealogy Database (Pelican Systems)
Database of British royal genealogy, based on secondary sources, originally sold as a PC program. Unfortunately the sources are not specified, but the information given is detailed and extensive
Medieval and Ancient lines (Bill Marshall)