Complex sentence: In 1572 Karin married again, as her first husband was murdered by Erik XIV in 1563, to a Lars Henrikson, whom John ennobled in 1576 to care for his issue with Karin.
Split into simpler sentences: In 1572 Karin was married again, as her first husband was murdered by Erik XIV in 1563, to a Lars Henrikson. In 1576 he was nobled by John to care for his issue with Karin.