good general query via e-mail

Hi, I read your blog about title insurance. It is very helpful. I have 2 questions to ask: 1. I did not buy title insurance at the purchase. can I buy it now (later)? 2. My friend bought a house, and after closing he was noticed there was an unsettled mortgage made by previous owner against the house. The title company's search did not find and report the said mortgage. If my friend did have the