Ceredigion, formerly Cardiganshire, is a constituency represented in the House of Commons of the Parliament of the United Kingdom. Created in 1536, the boundaries have remained remarkably unchanged for nearly five centuries. From 1536 until 1885 there were two single-member constituencies, one being a county constituency (Cardiganshire) comprising the rural areas, and the other being a borough constituency (Cardigan District of Boroughs) comprising a number of separate towns; in 1885 the borough constituency was abolished, and its towns and electors incorporated into the county constituency. The towns which comprised Cardigan Boroughs varied slightly over this long period, but primarily consisted of Cardigan, Aberystwyth, Lampeter and Adpar, the latter now a suburb of Newcastle Emlyn acros