If you had a shareholding in the Company greater than 15%, you will be entitled to nothing in respect of unpaid wages, holiday pay etc, minimum notice and redundnacy.
If your PRSI class was S (which I assume it was) you will be entitled to very little from the state, as follows;
Widow's or Widower's (Contributory) Pension
Guardian's Payment (Contributory)
State Pension (Contributory)
Maternity Benefit
Adoptive Benefit
Bereavement Grant
Unforunately, you will not be entitled to claim the dole as result of your Company folding.