I have found a wealth of information on the Peckhams but nothing on Nancy Wright, although I do see several Wrights in Clarksville in the early to mid 1800's. My guess is that she is related somehow to these Wrights, but I have no links.
About the Maloons- we also have a relative on the Irish side- a McDonough who married a Maloon. My dad and his brother and sister would talk about Frankie Maloon- this would be in Oakland also. Does a Frank Maloon sound familiar?