Those "Lions Rampant" symbolize the fact that the clan is part of Sept MacAlpine, as in Kenneth MacAlpine (or MacAlpin) the first king of Scots, who came from the Western Hebrides to conquer the Picts, married a Pictish princess, and become the first Scottish king. The British queen flies this flag over Balmoral Castle when she's in attendance there. You're descended from royalty, Laddie!
Mother’s family came from the island of Colonsay in the inner Hebrides.
I have read recently that the Western Islands are the last part of Scotland which is both conservative and religious.