Translation of "Stepson" in French

Tom is Mary's stepson.

Tom est le beau-fils de Mary.

Tom introduced his stepson to Mary's stepdaughter.

Tom a présenté son beau-fils à la belle-fille de Marie.

To serve as military advisor to his 27-year old stepson Prince Eugène, now commanding

de devenir conseiller militaire de son beau-fils de 27 ans, le prince Eugène, qui commande désormais