More than 20<span id="mwARA" typeof="mw:Entity"> </span>million viewers watch the first televised <a href="https://en.wikipedia.org/wiki/Wedding_of_Princess_Margaret_and_Antony_Armstrong-Jones" id="mwARE" rel="mw:WikiLink" title="Wedding of Princess Margaret and Antony Armstrong-Jones">royal wedding</a> when <a href="https://en.wikipedia.org/wiki/Princess_Margaret,_Countess_of_Snowdon" id="mwARI" rel="mw:WikiLink" title="Princess Margaret, Countess of Snowdon">Princess Margaret</a> marries <a href="https://en.wikipedia.org/wiki/Antony_Armstrong-Jones,_1st_Earl_of_Snowdon" id="mwARM" rel="mw:WikiLink" title="Antony Armstrong-Jones, 1st Earl of Snowdon">Antony Armstrong-Jones</a> at <a href="https://en.wikipedia.org/wiki/Westminster_Abbey" id="mwARQ" rel="mw:WikiLink" title="Westminster Abbey">Westminster Abbey</a>.