Sentence:  The King of Sardinia, by a decree of the 9th of Dec. has abolished— / 1. The prohibition against the erection of <WSD>primogenitures</WSD> and feudal rights, enacted by the 9th section of the edict of the 29th of July 1797, or by any other law; restricting, however, to those <WSD>primogenitures</WSD> and majorats only which shall be erected in favour of persons.... 
Meaning of the word marked with <WSD> tags:  An instance of such a right of inheritance, established by custom or law.