Nice thought but hops have been used a tad longer than that.
"The first documented instance of hop cultivation was in 736, in the Hallertau region of present-day Germany, although the first mention of the use of hops in brewing in that country was 1079. Not until the thirteenth century in Germany did hops begin to start threatening the use of gruit for flavoring. In Britain, hopped beer was first imported from Holland around 1400; however, hops were condemned in 1519 as a "wicked and pernicious weed". In 1471, Norwich, England banned use of the plant in the brewing of beer, and not till 1524 were hops first grown in southeast England. It was another century before hop cultivation began in the present-day United States in 1629.[" http://en.wikipedia.org/wiki/Hops
I know, i know, Wikipedia? Close enough for acting like I'm working today, work.