All the Netherlands would be then formed into a secundogeniture for Spain, and the first sovereign would be the husband of a French princess.    From Wordnik.com.  [PG Edition of Netherlands series — Complete] Reference

(3) Austria ceded Naples and Sicily, the island of Elba, and the stati degli Presidi to Spain as a secundogeniture for Don Carlos so that these lands could never be united with the crown of Spain.    From Wordnik.com.  [1733-35] Reference