I can remember people who died in the second half of the twentieth century who were alive in the nineteenth century. My parents were both born around a hundred years ago - my mother turned 40 when I was two months old. This means that all my grandparents were alive in the 1900s. I clearly remember both my grandfathers, and their deaths, and many elderly aunts who passed away. One memory that has stayed with me is visiting an uncle of my father's and he was recalling something that happened when he was a child. I suddenly realized that he was describing something that happened in the nineteenth century. Now it is the 'next' century, and my memory can cover three different centuries. How amazing is that.