Early source information
Early records of the death of Prince Michael Vsevolodovich, dating from the middle of the 13th century, do not have the characteristics of the later SMF, but they served as material for the SMF.
Therefore, I consider it appropriate to present here again these generally well-known and easily accessible texts, to which I will refer many times.
John of Plano Carpini
Shortened text of the section. Full text in ukrainian version.