Also, the bibliography has so many leads for more reading. There's a pdf online of one about Marden, also by Leary. So I'll make a link to that.
But Sherrington 'motte' does look interesting especially as it is on that beautiful River Wylyle.
Looked up the other interesting mottes mentioned - Hamstead Marshall. The three had been mentioned as barrows in earlier times, and Aubrey has something to say as well....
"This motte and the two others nearby were categorised in Victorian times as tumuli , based on earlier sources; this is perhaps surprising because Aubrey in the 17th century noted "by Hamstead Marshall in Berkshire (a seat of the Earl of Craven) is a hill like Silbury Hill, on which Captain W Winde designs to make a screw-walk, as at the keep of the Castle at Marlborough", and "Captain Wynd farther tells me that there is a hill called Castle Hill near/within a mile of Hamstead Marshall, greater than that before mentioned (Marlborough), and there is also another mount near, but not so great". In 1930 their true character was reestablished by Myres and Williams."
http://www.heritagegateway.org.uk/Gateway/Results_Single.aspx?uid=MWB1549&resourceID=1030
