Beyens de Grambais is a Dutch-Belgian family of nobility, with a branch settling in the Southern Netherlands in the early 17th century.

The Family Beyens had then as weapons: Of silver to the Lion of azure, lampassé, lit and armed with gold, with the tail forked and passed in saltire.

François Beyens, lord of Grambais, general collector for the Rhine and the Lower Lip and Commissioner for the renewal of horses for His Majesty.,[1] ennobled by Philip IV in 1647.,[2] son of Pierre Beyens and Elisabeth de Magistris (see VI), born in Amsterdam 13 December 1610, died in 1670.,[3] married Anna Cornelia de Maillot,[4] daughter of Jacques Maillot of Bouret, lord of Houvigneul[5] and Artois and of Suzanne del Plano.

married first with Françoise de Godin, daughter of Jacques François de Godin and Marie Waelhem, lady of Terborcht; married secondly with Marie Louise Philippine baronne von Bonninghausen, daughter of Jasper Lothier von Bonninghausen.

(Michael) Joseph Beyens, declared that his stepmother Maximilienne Philippine Godelive of Ghistelles forced him to be religious, in order to get a will before his profession and ceded his property in favour of her children.