Part of my personal history is that I had a twin who didn't survive in utero. As is often true with some aspects of one's personal histories, it is something I find difficult to talk about privately and so, I will not attempt it here publicly either.
But, it has been a very strong presence in every part of my life and who I am. Because of that, its something I felt important to document in my Art Journal so I did include all of the private thoughts and information there for future generations to have if interested. :-)