Complex sentence: After 6 years as a widower he remarried again, in 1845, to the High Chiefess Kaloloahilani, and their marriage, lasting to his death, was issueless.
Split into simpler sentences: After 6 years as a widower he remarried again, in 1845, to the High Chiefess Kaloloahilani. Their marriage, lasting to his death, was issueless.