I think I have found a reference to Michael Smith:
Irish Independent, July 05, 1940, page 8:
"THE DEFENCE FORCES
More Old IRA Men Join
A military guard of honour saluted members of the 2nd Battalion, Old Dublin Brigade, I.R.A. when 200 of them arrived at Collins Barracks last night to attest for service.
The men marched from Parnell Square headed by a band. They were cheered as they marched along O'Connell Street and the quays. They formed up on the barrack square, and, company by company, went through the formalities, being finally sworn in. They will do part-time training as second-line volunteers.
Those who joined up included: - Messrs F and L Henderson, H. Colley, P O'Daly, C. Goulding, T. Meldon, J McManus, S. Ward, S Brown, M. Smith, P.J. McGrath, J. Reid, T. Clarke, and J. Troy, secretary. "
There is a little more to the article but it doesn't really add much unless you are a relative of Major-General O'Neill or the O'Dalys.