In the eighteenth century, when compiling the Herbovnik, the families of the Chelishchevs, Pantsyrevs and Glazatovs invented a common origin from the Welfs through the fictional "William of Luneburg from the generation of King Otto IV" who allegedly went "to the Grand Duke Alexander Yaroslavich to the Battle of the Neva" and adopted Orthodoxy with the name of Leon. At the same time, Mikhail Brenko, a favorite of Dmitry Donskoy, who laid down his head during the Battle of Kulikovo, was included in the number of ancestors of the Chelishchevs.