The September Issue of the Genealogists' Magazine (published by the Society of Genealogists) includes a detailed article on the descent, by two different routes, of the Queen from John Walsh, who was buried at Leatherhead at the age of 84 and described in his will as "heretofore of Redbourn in the County of Herts." John Walsh's birth details are still unknown, but if you are descended from him you are a cousin of the Queen.
Additions to the Society's Library include Percy Ilott's Hertfordshire Stories, Plays and Poems, published in 1938.
The Society's list of events, lectures and courses includes a half day lecture, My Ancestor was a Bastard, on 26th November. This is given by Ruth Paley, the author of a book with the same title, available from the Society's web site.