[2] He was christened at Ciergnon Castle, one of the royal family's summer residences, on 25 October 2003 by Cardinal Godfried Danneels, the Archbishop of Mechelen-Brussels.

[1] In August 2013, Prince Gabriel accompanied his father King Philippe to a European Hockey Championship match in Boom, in which Belgium played (and won) against Germany.

[13] During the COVID-19 pandemic, Prince Gabriel had conversations over the phone with elderly people in residential care centers in order to encourage and support them.

[14] In June 2021, Prince Gabriel accompanied his father King Philippe on a visit to the 15Wing Air Transport at Military Airport Melsbroek.

[15] In April 2023, Prince Gabriel accompanied King Philippe on a visit to French Guiana, where they witnessed the launch of the Ariane 5 rocket from the Kourou Space Center.

[18] On 21 July 2023, he and his sister Elisabeth were among the fellow students of the Royal Military Academy Belgium to parade during the Belgian National Day.