We were originally fairly sure this photo was taken on Monday, 10 July 1922, but wanted to know a lot more about it than we did. If correctly dated, this would have been taken 5 days after Oscar Traynor's anti-Treaty fighters had been defeated around O'Connell Street in Dublin, and 17 days before he was arrested and imprisoned in Gormanston Camp... We asked if any of you could help and there was a huge effort put into correctly dating this photo.

Thanks to everyone involved, but ultimately, we have to thank Siulach who commented: "According to the Irish Independent, April 3, 1922, the Dublin City Brigade I.R.A. paraded at Smithfield on the 2nd "under officers who recognise the Executive established as a result of the recent Convention", and were addressed by Oscar Traynor, Rory O'Connor and F[rank] Henderson."

The dating of this photo is particularly useful to us, because it allows us to accurately date other W.D. Hogan photos taken at this spot on Sunday, 2 April 1922! And also allows us add the Holy Trinity of tags: Location Identified; People Identified; Date Established...