A huge crowd of fans congregated outside the O'Connor's hostelry as they eagerly waited to get a glimpse of the singer-songwriter who was inside the pub recording the music video for the song that he was inspired to write about an Irish woman.
In the song, he sings about meeting a mysterious Galway girl on Grafton Street, who plays the violin in an Irish band and fell in love with an Englishman.
After wrapping up the video late in the evening, it's understood that Ed Sheeran then hit a local restaurant for a bite to eat. Fans will next get the opportunity to see Ed in the flesh when he plays Dublin’s 3Arena on 12 and 13 April.

Caherconlish, County Limerick musician Niamh Dunne and her Antrim-based trad band, Beoga, appear on the track on Ed Sheeran's new album, ÷ (Divide).
And its seems everybody is speculating that the mysterious Galway girl in question is, in fact, Niamh Dunne herself. She had this to say about it: "I'm so happy with 'Galway Girl'. Ed Sheeran knows how to write a great pop song and it's so catchy. As for being the inspiration I dunno if you could go that far really, Christ almighty and I a Limerick woman!
"My sister said she knew straight away it couldn't be about me when later in the song she beats him at darts and pool!"
Earlier this year, Ed Sheeran confidently predicted that he felt 'Galway Girl' was a song that would "explode" in popularity in his grandmother's homeland.
"It would be something to do with the county of Galway," Ed Sheeran told RTE Radio earlier this year. "I've got a trad band called Beoga, they're actually from Belfast. It's a fiddle, a pipe, a bodhrán and piano and we really jam.
"It's gonna be really good, but I think I will never be able to play another song in Ireland again because that one will just be the song."