Brian Spierin is a leading expert in Ireland on the Law of Succession and Probate. He practised at the bar since 1985 and was called to the inner bar in 1999. Brian retied from practice in July 2022. He has been involved with wills for nearly forty years, as a member of staff of the High Court Probate Office, a law lecturer, a published author and as a junior and senior counsel. He is the author of The Succession Act and Related legislation: A Commentary, 5th Edition, which won the Dublin Solicitors Bar Association Book of the Year in 2018 and Wills, Irish Precedents and Drafting, 3nd Edition, which was also nominated for Practical Book of the Year by the Dublin Solicitors Bar Association.