Conversation so far:
Who were the original members of the The Dubliners?
Founding The Dubliners members were Drew, Kelly, Ciarán Bourke and Barney McKenna.
Who else was in the original Dubliners?
John Sheahan and Bobby Lynch joined The Dubliners in 1964.
What did Bobby Lynch do in The Dubliners?
Lynch was taken on as his temporary replacement.
Did the Dubliners write their own music?
The Dubliners worked with Behan regularly between 1965 and 1966; Behan wrote numerous songs for this act including the song McAlpine's Fusiliers
aR
The Dubliners became well known, not just in Ireland but also as pioneers for Irish folk in Europe and also in the United States.

Question: Do they know why Lynch commited suicide?
Self-contained rewrite: Do they know why Lynch commited suicide?