Wallace Hamilton Browne, Baron Browne of Belmont, is a Democratic Unionist Party politician, who has been a Member of the House of Lords since 2006, and was a Member of the Northern Ireland Assembly for East Belfast from 2007 to 2011. From Wikipedia
The resignation follows an incident where a portrait of former DUP Lord Mayor Wallace Browne was vandalized during an event, prompting calls for a thorough investigation.