Marcus - a bit messy ??? How can your Aunt have two twins, either a twin or she is one of triplets. A will is a letter of wishes for the purpose of an executor carrying out the wishes after death. You must remember that (as you have already posted) that you are 23. What happens if you become married and have children ? If there is an argument in the family, what happens if your Aunt allows the others into the house, but then can't get them out without a very costly legal battle ??? This is something which requires careful thought and legal opinion.