Complex sentence: On the 29th of June 1784, Boscawen married Elizabeth Anne Crew, however he had to be granted a special license in order to wed her, due to her being a minor at the time.
Split into simpler sentences: On the 29th of June 1784, Boscawen married Elizabeth Anne Crew. He had to be granted a special license in order to marry her, due to her being a minor at the time.