Complex sentence: However Te Rauparaha fearing a military repraisal fled to his island stronghold of Kapiti hoping that the New Zealand land tribunal would rule in his favour, which it did however he never returned to his lands in the Wairau.
Split into simpler sentences: However Te Rauparaha, fearing a military reprisal, fled to his island stronghold of Kapiti hoping that the New Zealand land tribunal would rule in his favour, which it did. However he never returned to his lands in the Wairau.