Solved Odd name coming up in my network. Not my device.

I have recently been playing a game through Hamachi with a friend. My networks looked all normal last night, then suddenly when I wake up I have a well...err odd one connected. Now I inform you that there's is only 2 of us in the Hamachi network. My computer is 'Derick', my friends is 'Sam' my school laptop is 'PaCyber' now there is another, I am certain neither of us have actually connected. My...