Complex sentence: The house was intended for Kamehameha's favorite and most powerful wife, Kaahumanu, but she refused to live in the structure and resided instead in a traditional Hawaiian-styled home only feet away.
Split into simpler sentences: The house was to have been built for Kamehameha's favorite and most powerful wife, Kaahumanu. She refused to live in the structure and resided instead, in a traditional Hawaiian styled home only feet away.