Can you please tell me how old these characters are in these Shakespeare plays?

The only character I feel is close to 19 on this list would be Cordelia (King Lear), all the others are either middle-aged or I haven't heard of them before. Others I know of that would be around 19 or early 20's are Miranda (The Tempest), Viola (Twelfth Night) and Beatrice (Much Ado about Nothing).