According to the Primary Chronicle, he founded the city of Belgorod in 991.

Information about him comes mostly from the Primary Chronicle.

They date back to the Primary Chronicle and working together, they can give life and take it away.

The raid was led, according to the Primary Chronicle, by a king called Igor.

Its text is quoted in full in the Primary Chronicle.

The Primary Chronicle says that their mother was a Bulgarian woman.

This took place according to the Primary Chronicle.

Her date of death is recorded in the Primary Chronicle.

Primary Chronicle mentioned about a death of woman named Malfrida.

Only source of information on the attack is the First Primary Chronicle written 100 years after the attack.