For 7 think of three different parts each 4 letters long. The first is a form of punishment, second is another word for wretched and the last bit is a familiar name for the bard.
55 starts with a common word for drunk followed by what someone, especially Anne Robinson, does when they show their understanding. Together it makes a children's game although there are some adult championships for this game!
87 the first part of the name is a run on in the clue with the second part of the name made from another word for a place where there a lot of trees followed by an old fashion name for someone who looks after. The whole answer is the name of a famous actor.