In the "Mutsuwaki" (Record of Mutsu), which depicts the events of the Former Nine Years' War and the Latter Three Years' War, Yoriyoshi is described as 'Calm and levelheaded, and excelling in military strategy, he was a commander of the finest caliber' and 'he loved his warriors and was fond of charity.'
前九年・後三年の役を描いた『陸奥話記』では「沈毅にして武略にまさり、最も将帥の器なり」「士を愛し施しを好む」とされている。