Siol Alpin

The Siol Alpin or ‘House of Alpin’ is a family of seven Scottish Clans that trace their descent from King Alpin of Dal Riata, supposed father of King Kenneth MacAlpin I, first King of Scots. The seven Clans that make up the Siol Alpin are:  Clan Grant, Clan MacGregor, Clan MacNab, Clan MacFie, Clan MacKinnon, Clan MacQuarrie and Clan MacAulay of Ardincaple.The belief in the Siol Alpin tradition, amongst the individual clans that claim to be part of it, is without question a strong one. All seven clans, for instance, share the same plant badge (see Heraldic badge) - the Scots Pine - worn in their bonnets. Some of the Clans further emphasize this tradition through their respective mottos and slogans. The MacGregor motto for instance is ‘My Blood is Royal’, while the MacFie clan uses ‘For the King’.  Clan MacKinnon on the other hand has their clan slogan as ‘Remember the Death of Alpin’.
See more at Wikipedia.org...