As a horn player, there are not too many opportunities to write original cadenzas. I can not think of any pre-classical horn concerti that leaves room for a cadenza. During classical times we have several examples, most notably the concerti of Haydn and Mozart need cadenzas and shorter "eingang"s in several places. Also Rosetti and Punto leave room for cadenzas in their concerti (and I assume some other classical concerti that are not in my active repertoire fall in the sa