Scottish lowlanders speak English, so you must think about Gaelic, which is a language used by some of the Scottish Highlanders.
Online translator is here:
http://www.lexilogos.com/english/gaelic_scottish_dictionary.htm
"Scottish" translates as "Schottisch"
The Scottish translation for the word 'devil' is 'de'il'.
If you mean Scottish Gaelic, there isn't one.
Teagamhaiche (?)
an seabhag
Around.
naomh
màthair
The Scottish Gaelic version of Peter is Peadar(patter).
The Scottish translation for the name 'Gavin' would typically be 'Gavin' as it is already a common name in Scotland.
Perhaps more appropriately a Scottish Gaelic 'translation'. As a Scottish clan Clann Dà idh they arrived in Ireland in the 1600s.They are called MacDhà ibhidh in Scottish Gaelic.
caileag