claim: There are only DUP members (who are/were members of a Northern Ireland political party) in the House of Lords
evidence: John Alderdice (Lord Alderdice of Knock; Liberal Democrat): previous leader of Alliance Party; Ken Maginnis (Lord Maginnis of Drumblass; Independent Ulster Unionist): previous MP for Fermanagh and South Tyrone (UUP); John Taylor (Lord Kilclooney of Armagh; Crossbench): previous MP for Strangford (UUP); David Trimble (Lord Trimble of Lisnagarvey; Conservative): previous leader of UUP; and Margaret Ritchie (Baroness Ritchie of Downpatrick; Non-affiliated): previous leader of SDLP.