Complex sentence: Catholics were identified by their Irish names and their beliefs this resulted in them having to lie about their religious beliefs or give themselves a new name or in some cases a new identity in a bid to secure a job in Scotland.
Split into simpler sentences: Catholics were identified by their Irish names and their beliefs. This resulted in them having to lie about their religious beliefs or giving themselves a new name or in some cases a new identity in a bid to secure a job in Scotland.