Then to confuse it a little more, there were the traditional UK bottle sizes, the "reputed pint" of 13 ounces and "reputed quart" of 26 ounces, nominally 1/12 and 1/6 of an Imperial gallon. Except that would add up to 156 ounces in a gallon, and an Imperial gallon is 160, so those reputed measures don't look very reputable.