Jean I de Lannoy surnamed "le ramager" (the singer or warbler) seigneur de Lannoy de Lys & de Maingoval (son of Hugues II). He built the chateau de Lannoy [castle at Lannoy] where we find "Jean de Lannoy ecuyer (esquire) who was at a review with six other ecuyers of his company April 22 1378."
"Jean de Lannoy one of nine ecuyers (esquires) of the company of Binart dv Perray ecuyers (esquires) de la company de Pierre de Havesquerque, seigneur de Raisse chevalier, captain of the ville d'Ardres, in Sept. 1410."
"Jean de Lannoy one of fifteen ecuyers of the company of Antoine de Lay chev. Boch who was killed at Rosay in Brie Oct. 3 1411."
"Jean de Lannoy one of the ecuyers of the company of Guy de Laval seigneur de Gaure ecuyer banneret, who was killed at Pontoise Oct. 4 1411."
He married: Jeanne de Croy daughter of Jean seigneur de Croy GRAND BOUTEILLER de FRANCE (killed at Agincourt 1415) (Chief Butler to the KING 1405 ?) & wife Marguerite de Craon - who remarried Jean seig. de Sombresse-Armes Croy: Arg., 3/fasces gules see chap. on Gold. Fleece - they had a 2d son Antoi Lannoy seigneur de MAINGOVAL who follows succeeded bro. & the eldest son and LANNOY heir Jean II
Note "le Ramager" is called the first Jean de Lannoy showing that de Franchimont was not counted as a Lannoy.
Delano, Joel Andrew. The genealogy, history, and alliances of the American house of Delano, -1899. ed by Delano De Lannoy, Mortimer [New York: s.n, 1960] p. 32. Pdf. Retrieved from the Library of Congress, <www.loc.gov/item/84200154/>.