Complex sentence: A native Californian he is a ninth generation member of a family whose which predates California becoming part of the United States indeed early members of his family were the participants in the first recorded marriage in Mission Santa Barbara in the 18th century.
Split into simpler sentences: A native Californian he is a ninth generation member of a family whose which predates California becoming part of the United States. Indeed early members of the clan were the participants in the first recorded marriage in Mission Santa Barbara in the 18th century.