Complex sentence: It was founded by Hasebe Kunishige who was originally from Yamato Province, then he travelled to Sagami Province where he became one of the Ten great students of Masamune ("Masamune juttetsu") and eventually went to Kyoto to found the Hasebe school.
Split into simpler sentences: It was founded by Hasebe Kunishige who was originally from Yamato Province. He travelled to Sagami Province where he became one of the ten great students of Masamune ("Masamune juttetsu"), and eventually went to Kyoto to found the Hasebe school.