The Adventures of Robin Hood S03 E38 Marian's Prize

Marian enters an archery contest in place of Robin. Prince John (Donald Pleasence), visiting Northeave village, ups the prize money to 20 crowns, hoping to draw in Robin Hood. Marian (disguised as "Martin") wins the contest, but Robin (disguised as "Hugh") is tempted and challenges Martin, not realising Prince John is waiting.