Maddison was a band from Baltimore, MD that did a bunch of local shows, and recorded some demos and an E.P. They had Kyle Haberle singing, Matt Updegraff and Ronny Vitek playing guitars, John Michalowski playing bass for a while Bill Jones playing bass for a little while before, Nick Krus playing keyboards/synth, and Scott Johnson playing drums.
They were probably formed sometime in 2006 and broke up in 2009.