The Marquess of Becelaere is a former French title, now extinct. Becelaere, in Flanders, is an old spelling of Beselare, in Zonnebeke.
The title was created for Maximilien-Emmanuel de la Woestyne, 1st Marquess of Becelaere (1660-1729) in 1705 by Louis XIV. His ancestors, the house of la Woestyne, had long possessed the Flemish lordship of Becelaere. The title was passed by male primogeniture. For over 400 years the family inhabited Beselare Castle.
Maximilien III Emmanuel de la Woestyne, 1st Marquess of Becelaere :
married to Louise Eugénie de Melun, granddaughter of Charles de Ligne, 2nd Prince of Arenberg .