Cognomen Mary Lou (Mary Lou 
) , worldwide, is a very rare surname. The surname Mary Lou is characteristic of Austria, where it is a rare surname, Nicaragua, where it is a very rare surname, and Chile. Predominantly, Mary Lou is the forename as well as the last name.
Cook, Taylor, Thomas, Torres, Harris, Flores, Wilson, Sanchez, Stewart, Collins, Bennett, Ramirez, Roberts, Jackson, Johnson, Hartman, Martinez, Anderson, Gonzalez, Thompson, Williams, Rodriguez, Garcia, Palmer, Parker, Santos, Reed, Ruiz, Hall, Wood, Moore, Smith, Allen, Adams, Clark, Baker, Hernandez, Brown, Perez, Reyes, Davis, Lopez, Jones, Walsh, White, Young, Martin, Miller, Kelly, and Fernandez