When I moved to Maryland at age 8 from Chicago, they made fun of my accent. We said "FIRE", not "Far" , roof, not ruf.
Maryland accent includes things like the name of Orioles pronounced like the cookie, Oreos. Washington with a "r" , "Warshington"! Haven't really heard the accent in 16 years here, hers was pretty obvious to me. The eastern shore is totally different and that's where I was for the last 10-12 years before moving here to Florida. Tons of New Yorkers here!