Email Address: cityofw1@bellsouth.net. Warrenton, the county seat of Warren County, incorporated as a town on December 8, 1810. The city and the county remember General Joseph Warren, a Revolutionary War hero who was killed in the Battle of Bunker Hill.
Facebook does not offer a way for you to see friend-requests that you previously rejected explicitly or deleted. If you have following activated, and if the person who you declined didn't unfollow you (manually), you should find that person in your followers, from where you can send a friend request.
They've simply changed their profile settings so people can't add them as a friend. The button can appear/disappear based on previous actions, for example, a denied request or blocking then unblocking a user. Your friend should still be able to send a request to you, if not, submit a help request to facebook.com/help. You can also try using m.facebook.com or a Facebook mobile application.