Judge Rosemary Horgan was formerly a partner at Ronan Daly Jermyn solicitors, where she practised for many years in all areas of family law. She lectured on family law issues and was a consultant to the Law Society of Ireland on family law. She was a member of the Law Society's Family Law and Civil Legal Aid Committee and Law Reform Committee. Judge Horgan was also a member of the Editorial Board of the Irish Journal of Family Law and co-authored The Divorce Act in Practice; Family Law Practitioner published by Round Hall Sweet & Maxwell. Judge Horgan served on the Legal Aid Board (including as Chairperson) from 1980 to 1998. She was appointed to the District Court in 2011 and appointed as President of the Court in 2012. Judge Horgan obtained a BCL, and later an LLB and LLM, from University College Cork.