Complex sentence: Therefore, he went to find the Doge, who was presiding over the Senate in his cap of office, and, respectfully kneeling before him, he related the story of the battle between the devils and the patron saints of Venice.
Split into simpler sentences: Therefore, he went to find the Doge who was presiding over the Senate. Respectfully kneeling before him, he related the story of the battle between the devils and the patron saints of Venice.