You know when people talk about events that have happened in your childhood so much that they 'become' a memory but in actual fact they are not? Well, I have lots of those but my earliest childhood memory that I have is when I was five.
In later years I knew it was the same year my brother was born but I don't remember that myself. My mum had just given birth to my brother and they had to stay in hospital - I don't remember that either.
The thing I do remember is that I walked to school. I remember this because it was the worst winter that we had had in years; everything was covered in snow and trees had fallen and were strewn across the paths. I remember seeing them and being amazed that weather could cause trees to fall. That is my earliest memory - short but vivid in my mind.