House of Atholl is also known as the House of Dunkeld.
the first interregnum there were 13 claimants to the Scottish throne.
After the adjudication of Edward I of England the Crown was handed
to John de Balliol in preference to Robert de Bruce.
the second interregnum Edward I of England took over the governing
of Scotland, claiming that John de Balliol had forfeited the right
to the Crown for disobeying him.
In 1603 the Crowns of England and Scotland were
united when James VI of Scotland also became James I of England.