[1] In the 16th and 17th centuries, many of the Chelishchev nobles clearly had Turkic nicknames (such as, for example, Alai, Bulysh, Enaklych, Kulush, Sarmak, etc.

The knowledge of the Turkic languages is also indicated by the fact that in the years 1533–1542 the Chelishchev brothers were constantly sent to the Crimean Khanate for negotiations.

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.

[2] 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.

In the Herbovnik of Anisim Titovich Knyazev of 1785 there is an image of two seals with the arms of representatives of the Chelishchev family: Boris Fedorovich Chelishchev, in 1498–99, the ambassador of Ivan III to the Crimean Khan Meñli Giray; in 1492, the Lithuanians burned his estate Alexino near Novgorod.