Complex sentence: According to a third scholarly theory, Magna Hungaria was neither the Magyars' original homeland nor their first homeland in Europe; instead, the ancestors of the Eastern Magyars whom Friar Julian met had moved to Magna Hungaria from the south.
Split into simpler sentences: According to a third scholarly theory, Magna Hungaria was neither the Magyars' original homeland nor their first homeland in Europe. Instead, the ancestors of the Eastern Magyars whom Friar Julian met had moved to Magna Hungaria from the south.