Complex sentence: Moreover, in 1346 John inherited, the great Lordship of Garmoran through his brother-in-law Raghnall MacRuaridh, meaning that John's dominions now included all of the Hebrides except Skye, and all of the western seaboard from Morvern to Loch Hourn.
Split into simpler sentences: Moreover, in 1346, John inherited the great Lordship of Garmoran through his brother-in-law Raghnall MacRuaridh. This meant that John's dominions now included all of the Hebrides except Skye, and all of the western seaboard from Morvern to Loch Hourn.