Guillaume Ergo was sworn in at the French-speaking Bar of Brussels in October 2025 and joined the firm Resolved in March 2026.
After completing his bachelor’s degree in law at the Facultés universitaires Notre-Dame de la Paix in Namur, Guillaume obtained a master’s degree in law (European law) from the Université catholique de Louvain in 2021. He then went on to complete his education with a master’s degree in criminology.
Guillaume began his professional career as a parliamentary assistant, first at the Federal Parliament and then at the Walloon Parliament. After more than four years in that role, he decided to put the skills he had acquired to use by becoming a lawyer.
Guillaume is fluent in French and English and has a passive knowledge of Dutch. Alongside the firm’s lawyers, he is notably involved in public law, administrative law and real estate matters.