A fairly esoteric history question, but it is relevant to our saga. I tried to find information on this, but could not find it on the Internet. I won't be able to get a library book for some time, so I thought I would throw it over to the historians here....
In Heirs to Merlin (p. 90 sidebar), I notice that several nobles are on crusades.
Which crusade? Albigensean or Fifth? Were English nobles more likely to choose one or the other? Did they get to choose?
I am particularly interested in the whereabouts William de Ferrers. HtM does not say if it was the 4th or 5th Earl of Derby (they had the same name), but I assume 4th. If anyone knows a detailed source besides the one from Wikipedia , preferably one from the Internet.
 Turbutt, G., (1999) A History of Derbyshire. Volume 2: Medieval Derbyshire, Cardiff: Merton Priory Press