This is Mellenbrook Rd. in Maryland. Does anyone have any ideas how our last name made it to Columbus, Maryland? Many of our ancestors pronounced the name as it is written here. Some pronounced Moellenbrock as Mah-len-brock. It is known that the current Mellenbrooks once spelled the name Moellenbrock and through the years they-the Ohio Moellenbrocks changed their name to Mellenbrook. This picture is courtesy of Kayle Mellenbrook Watts, of the Ohio Moellenbrocks.