Complex sentence: The number of seats in Scotland was increased by 12, and the representation of Ireland in Parliament remained at 103 members, even though its population had declined relative to the rest of the United Kingdom, due to emigration which had continued since the famine.
Split into simpler sentences: The number of seats in Scotland was increased by 12, and the representation of Ireland in Parliament remained at 103 members. This was in spite of the fact that it had suffered a relative loss of population compared with the rest of the United Kingdom, due to emigration which had continued since the famine.