Complex sentence: Grommel is the one who found Fraziel in the Stonekrusher's caverns and when he asked his master the identity of the attacker Fraziel managed to utter the word, "Brother".
Split into simpler sentences: Grommel is the one who found Fraziel in the Stonekrusher's caverns. When he asked his master the identity of the attacker Fraziel managed to utter the word, "Brother".