Other contributors have said "What is the cause of death of Lady Montague?" is the same question as "When where and how does lady Montague die?" If you believe that these are not asking the same thing and should be answered differently, click here
No. Lady Montague was so devastated when Romeo was banished, she died before he came back to kill him himself with Juliet. His father had no one left after Romeo died. I believe he talks about it the...