as a matter of right

as a matter of right

adverb be entitled to, by right, correctly, duly, fitting, properly, rightfully, with auuhority
References in classic literature ?
Those were the sort of visitors with whom his ebon Majesty loved to dally until they became pale with fright or furious with anger and impatience; but men like this white captain, who had brought him no presents, who came in overwhelming force and demanded a passage through his country as a matter of right were his special detestation.
Somewhat to his surprise, he was immediately supplied with a fine two years' old colt in his stead, a substitution which he afterward learnt, according to Indian custom in such cases, he might have claimed as a matter of right.