Do Children See What We Don't?

Hi I'm whitney dampier. I'm 14 years old and this true story happened when I was 3-4 years old. I don't know how can I remember all of this. I actually only remember very little but I do know what happened. I was at my grandma's house, sitting in her living room alone. And I was just playing with a buzz light year toy. I looked up and saw a black figure. It wasn't blurry or disappeared fast, it just looked at me and walked threw a wall. It was pure solid black and had the shape of a cowboy hat and boots. I screamed and my mom and grandma ran in there and asked me what was wrong. They say I said "man walked threw wall". I asked my grandpa about this house when I was 13 years old. He said it was a civil war battle field when the war was going on. They built their house on that land. His grandma lilly saw a black boy get hung in the trees. And my grandpa said he saw a little civil war girl at the end of his bed. He looked closer she disappeared. So the ghost I and my family had seen must have been civil war people.