This week we are asking for your help identifying the man on the right of this photograph pictured here with Kathleen and Stephen Behan, parents of Brendan Behan, and Ronnie Drew.

We have no record of the date of this photograph, the location or the photographer.

If you think you can help identify this man, or provide any additional information on the photo, please contact us at archives@rte.ie or on Twitter @RTEArchives.

Brendan Behan's 'Borstal Boy', starring Peter Coonan and Gary Lydon, runs at the Gaiety Theatre, Dublin until 25 October, 2014.