[1] Archaeological evidence reveals that Chernigov towns enjoyed an unprecedented degree of prosperity during his period which suggests that promoting trade was a priority for him.

[1] Commercial interests, in part, also motivated him to seize control of Halych and Kiev because they were channels through which goods from the Rhine valley and Hungary passed to Chernigov.

[1] The Nikon Chronicle (compiled c. 1550) added even more text to Mikhail's vita, including claims that the Mongols already established a system of military governors and tax collectors in all cities of Kievan Rus' in 1237–1240, which is historically very unlikely.

[7] Giovanni da Pian del Carpine, an Italian papal legate who travelled through the lands of former Kievan Rus' in the late 1240s, wrote the following account of his death in the Ystoria Mongalorum: (…) when Michael, one of the princes of Russia, came to submit to Bati, the Tartars first tried to make him pass between two fires.

[9] In the second half of the 19th century, many family branches stemming from Mikhail flourished: the Baryatinsky, the Gorchakovy, the Dolgorukie, the Eletskie, the Zvenigorodskie, the Koltsovy-Mosalskie, the Obolenskie, the Odoevskie, and the Shcherbatovy.