Hundreds of people have gathered in the courtyard of Dublin Castle, to mark the first anniversary of the referendum for marriage equality.

The referendum was passed by 62%, with 1.2 million people voting Yes for same-sex marriage.

In 2006, Katherine Zappone and her wife Ann Louise Gilligan unsuccessfully took a case to the High Court for their Canadian marriage to be recognised by Irish law.

Tánaiste Frances Fitzgerald listens in Dublin Castle, as Amnesty Ireland's Colm O'Gorman talks | Image via @caoimhseach on Twitter

However, the case became one of first major events in the debate on the recognition of same-sex marriage in Ireland.

The now Children and Youth Affairs Minister Zappone says the long fight for equal recognition of their marriage was worth it in the end.

People have also been posting their memories of the campaign on Twitter, using the hashtag #marrefmemories.