House of Lannoy

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House of Lannoy
Country	Belgium
Founded	13th century
Founder	Gillion de l'Annoit
Titles	Lords of Leeuwerghem Lords of Molembais Lords of Maingoval Barons of Aix Barons of Clairvaux Barons of Sombreffe Counts of Lannoy Counts of Beaurepaire Counts of La Motterie Princes of Sulmona Prince of Rheina-Wolbecq
Estate(s)	Bornem Castle Anvaing Castle
Cadet branches	Lannoy-Clairvaux Lannoy-Beaurepaire Lannoy-Mangoval

The House of Lannoy is the name of an old and important Belgian noble family that takes its name from the town of Lannoy in northern France. The name comes from l'Annoy (or l'Annoit, from Latin alnetum), which means 'the alderwood' in Picard French of Flanders.