Four of the unclued entries make up a ten-word Shakespearean quotation, including an apostrophe. The other three (two of two words each) represent three possible victims. Elsewhere, ignore an accent. 34 is in Brewer’s.
 

Across

11    He almost banned awfully poisonous plant (7)
12    Cross Spain with a formative stage (4)
14    Editor buys the farm and moves round (6)
17    See a wretch regularly buried in soil (5)
19    Breaking in Irish rugby games is initially no good (9)
21    Wet month, and its beginning? (5)
23    Runs are runs, and not so easy to come by (5)
25    It’s...