Leonardo Mongillo is the principal lawyer at Mongillo Law and has over 20 years of experience in family law. Leonardo was a student and then an associate lawyer with a downtown Toronto boutique family law firm from 1999 until 2015 when he opened his own practice. In particular, he assisted clients in high conflict divorce cases. He is certified to practice Collaborative Family Law and has proficiently represented clients through the Collaborative law process in the Greater Toronto Area.

Leonardo has a Specialized Honours Bachelor of Arts degree in Economics and Business from York University. His business acumen has assisted him in deciphering complicated financial arrangements and has provided a foundation to find solutions to the financial complexities of family law proceedings.