There've been a large number of media reports on a recent High Court case concerning an unmarried father, Mr. G. The judge appears to have emphasised family rights under Article 8 of the European Convention on Human Rights.
The full judgment doesn't appear to be on the Courts Service website yet.
[Update 23 November 2007:
The judgment is now available. The case is
T. v O.  IEHC 326, Mc Kechnie J., 10 September 2007]
Here are some of the news reports:
Landmark Ruling on Father's Rights (RTE)
Unmarried Father Wins Right to Seek Return of Twin Boys (Irish Times)
Judge Calls for Review of Fathers' Rights (Irish Examiner)
Unmarried Father Makes History in Custody Case (Irish Examiner)
International Herald Tribune Story