Complex sentence: He and his family moved into Toungoo Palace precincts where he and other staff, who also consisted of Mingyi Swe and Shin Myo Myat, attended to the crown prince throughout his childhood and youth.
Split into simpler sentences: He and his family moved into Toungoo Palace precincts. The staff, who also consisted of Mingyi Swe and Shin Myo Myat attended to the prince throughout his childhood and youth.