Complex sentence: Bothwell escaped and Kirkcaldy sailed to Shetland as Lord High Admiral of Scotland in pursuit, but his ship, the "Lion", ran aground north of Bressay.
Split into simpler sentences: Bothwell escaped and Kirkcaldy sailed to Shetland as Lord High Admiral of Scotland in pursuit. However, they did not meet, his ship, the "Lion", ran aground north of Bressay.