Scottish Gaelic is the form of Gaelic spoken in Scottland, so those people would probably just be considered Scottish.
It is mac in Scottish Gaelic.
The English language? Béarla (Irish) Beurla (Scottish Gaelic). As an adjective? Sasanach (Irish), Sasannach (Scottish). "The English (people)" na Sasanaigh in Irish; Sasannaich (?) in Scottish Gaelic.
"Gaelic" can mean "Irish Gaelic' or "Scottish Gaelic". They are classified as two distinct languages.
The Scottish Gaelic for 'brother' is bràthair.
in Scottish Gaelic: facal.
It is òran in Scottish Gaelic.
The Scottish Gaelic is do charaid.
In Irish d'fhíorghrá;in Scottish Gaelic: ?
It's Scottish, but not Scottish Gaelic. Originally a Scots variant of Margaret.(Margaret is Mairead in Scottish Gaelic.)
In Scottish Gaelic: Albannach In Irish Gaelic: Albanach
Fàilte is the Scottish Gaelic for 'welcome'.