Surnames mean nothing, a BigY700 test at FTDNA will give you your Haplogroup and downstream genetic mutations. Certain mutations are associated with certain Clans. I am Bell Beaker, R1b-L21 that over time moved over to Ireland , and then back to Scotland as a Gael of Dal Riata as a Sept of Clan Donald. Scotland is a blend of Gaels, Anglo Saxon, Jute, Norman. Robert the Bruce ,his mother was a Scot, father's line, 1066 Norman. My surname project has three distinctive genetic lines that use the surname, none of the three are related and represent different invasion timelines, Beaker being the oldest. A Clan Chief could make anyone a member of a clan, pledge of loyalty is all it took, genetics were not an issue, Clan Law was democratic, as opposed to Feudal Law.