self-government could Wales achieve a government reflecting the votes of a Welsh electorate. The Tryweryn flooding which was voted against by every single Welsh MP, suggested that Wales as a nation was powerless. The Epynt clearance in 1940 has also been described as a "significant - but often overlooked - chapter in the history of Wales". On 1 July 1955, a conference of all parties was called at Llandrindod by the New Wales Union (Undeb Cymru Fydd) to consider a national petition for the campaign for a Parliament for Wales. The main leader was Megan Lloyd George, the daughter of David Lloyd George, T. I. Ellis, and Sir Ifan ab Owen Edwards. According to the historian Dr William Richard Philip George, "Megan was responsible for removing much prejudice against the idea of a parliament for Wales". She later presented the petition with 250,000 signatures to the British government in April 1956. Official flag and capital city The first official flag of Wales was created in 1953 for the coronation of Queen Elizabeth II. This "augmented" flag including the Royal badge of Wales was criticised in 1958 by the "Gorsedd y Beirdd", a national Welsh group comprising Welsh literary figures and Welsh people of note. In 1959, likely in response to criticism, the Welsh flag was changed to a red Welsh dragon on a green and white background that remains the current flag of Wales today. On 21 December 1955, the Lord Mayor of Cardiff announced to a crowd that Cardiff was now the official capital of Wales following a parliamentary vote the previous day by Welsh local authority members. Cardiff won the vote with 136 votes compared to second-placed Caernarfon with 11. A campaign for Cardiff to become the capital city had been ongoing for 30 years prior to the vote. Historian James Cowan outlined some reasons why Cardiff was chosen which included; being the largest city in Wales with a population of 243,632, buildings in Cathays park such as City Hall and the National Museum of Wales among other reasons. Dr Martin Johnes, lecturer at Swansea University claims that Cardiff had become "a capital in a meaningful way, as the home of the Welsh government, whereas before, its capital status was irrelevant, it was just symbolic" prior to the formation of the devolved assembly of 1999. 21st century A 2007 survey by BBC Wales Newsnight found that 20% of