They next won a seat in 1967, when Winnie Ewing was the surprise winner of a by-election in the previously safe Labour seat of Hamilton.
The current Scottish National Party leader, Nicola Sturgeon, has served as First Minister of Scotland since her predecessor Alex Salmond resigned on 20 November 2014, following the majority of the Scottish electorate's decision to reject independence at the Scottish independence referendum held on 18th September.
All but three of the fifty nine constituencies in the country elected an SNP candidate.
BBC News described the historic result as a "Scots landslide".
Young was imprisoned for refusing to be conscripted.
The SNP first won a parliamentary seat at the Motherwell by-election in 1945, but Robert Mc Intyre MP lost the seat at the general election three months later.