William was born in the west of Ireland in the small village of Boherbue. (Yellow Road). He immigrated to the United States in 1982. He is married to his wife Chun Yan Zhu who emigrated from China.
They have a 15 month old daughter, Irene O’Callaghan Leader. William is also the proud father of Luka age 14.William’s educational background is in the fields of Medicine and Law. He graduated from the University College of Dublin, receiving a MB, BCH and BAO.
William attended the University of West Los Angeles receiving a JD Degree.William is now a Small Business owner and looking to devote his time and efforts to ensure the opportunities afforded him are there for his family and the families in the 29th Congressional District.