How many movies have Seosamh O'Cuaig and Siobhán Ní Shúilleabháin collaborated on?

They have worked on 1 movie together! Their first movie together was Lament for Art Ó Laoghaire (1975) and was their highest rated movie together. They have not worked together since Lament for Art Ó Laoghaire (1975).