Edgar = Hamlet? Mew?

While reading, I found striking similarities between Hamlet and Edgar. Both acted insane for a good portion of their respective plays, both were high ranking, and both had their demise plotted by a family member. Although there is the difference that Hamlet died and Edgar got control of England.

Also, the endings of the plays were similar in that most of the characters died in the end. Same with Romeo and Juliet. Were these tragedies more popular than uplifting comedies in Shakespeare's time?

And, althoug this isn't a question, I just though it very strange and humorous when, on page 134, "Marry, your manhood, mew!" Really? Mew? I have to say, that that line is now my favorite. :)

~Hannah