Duke Wilhelm […] seems to have been of a headlong, blustery, uncertain disposition; much tossed about in the controversies of his day.

Your cousin, Seek Seek the Spermophile, sometimes called Gopher Squirrel, who lives on the open plains of the West where there are no rocks or stones. He likes best the flat, open country. He is called Spermophile because that means seed-eater, and he lives largely on seeds, especially on grain.

unlocks their [clay's] binding Quality.

(by ellipsis)