Can the name 'Oat' be a real name? What do you think of it?

I had a dream before and I had a little sister and her name was Oat. After that dream, I cant stop thinking about that name! Can it be a real name and what do you think of it? Please dont say anything dumb like "Oat is a food not a name stupid.." Jeez I get its a food. So calm down(;