Marc Liénart van Lidth de Jeude (22 November 1950 – 27 December 2019), known professionally as Art Sullivan, was a Belgian singer.

[1] He was successful in many countries, including Belgium, France, Portugal and Germany.

[4] The family members of the Noble House of Van Lidth de Jeude are living in Belgium and the Netherlands.

The parents of Art Sullivan are Marie-José d'Udekem d'Acoz[5] and Josse Liénart van Lidth de Jeude.

His mother, daughter of Baron Guy d'Udekem is a distant relative of Queen Mathilde of Belgium; they have little contact.