Mar Zutra
From Zissil
Mar Zutra was a sixth generation Amora. He served as the head of the Pumpedisa Yeshiva from 411 until 414 and was a friend of Rav Ashi, Amamar, Rav Yemar bar Shelemya and Maryamar. Mar Zutra was a student of Rav Papa and Rav Pepe. He helped compose a blessing to be recited while visiting mourners which he himslef used when he came to comfort Rav Ashi as he sat Shiva.