Frederick I, Holy Roman Emperor
Petraries are sometimes considered smaller versions of mangonels. In 1159, Frederick I, Holy Roman Emperor made a distinction between petraries, which were small artillery, and mangonels, which were large artillery. The opposite is also true and sometimes the petrary is considered the more powerful weapon, whereas mangonels were the smaller artillery, as was the case in 1185, when the French set up light "Turkish mangonels" and heavy petraries, and 1195 when Baldwin V, Count of Hainaut laid siege to Huy.