In 1776 Richard Hely-Hutchinson 1st Earl of Donoughmore (age 19) sat for MP Dublin University and MP Sligo Borough He chose to sit for MP Dublin University until 1778 and thereafter for MP Dublin University until 1783.

In 1790 John Cole 2nd Earl Enniskillen (age 21) was elected MP Sligo Borough.

In 1798 John Cole 2nd Earl Enniskillen (age 29) was elected MP Sligo Borough.