Complex sentence: Borah was distantly related to Katherine von Bora, a Catholic nun who left her convent to marry Martin Luther; the family came to America in about 1760, fought in the Revolutionary War, and moved west with the frontier.
Split into simpler sentences: Borah was distantly related to Katherine von Bora, a Catholic nun who left her convent to marry Martin Luther. The family came to America in about 1760, fought in the Revolutionary War, and moved west with the frontier.