Definition of "proprietor"

Here the proprietor has had the good sense of holding on to the good old fashion of giving his customers their moneyworth of good wines and liquors.

1879, Chas. McArmor, The New Handbook of Vienna […] ‎, 2nd edition, Otto Maass, page 106

The [Washington] Post's proprietor through those turbulent [Watergate] days, Katharine Graham, held a double place in Washington’s hierarchy: at once regal Georgetown hostess and scrappy newshound, ready to hold the establishment to account. That is a very American position. British journalists shun complete respectability, feeling a duty to be ready to savage the mighty, or rummage through their bins.

2013 August 10, Lexington, “Keeping the mighty honest”, in The Economist, volume 408, number 8848