As a film actress in Denmark in 1910s she was known as Luzzy Werren.
According to Den Danske Film Database, Maria Widal was a German actress, but nor her birth place nor her birth date are known.
The actress Maria Widal built up as a new star from director Urban Gad in 1916.
For Nordisk, she also made the comedies Min Ven Levy/My Friend Levy (Holger Madsen, 1914), and Endelig alene/Finally alone (Holger Madsen, 1914), both with Carl Schenstrom, later part of the famous comedy duo Fy og Bi or Pat & Patachon.
Besides few other movies Maria Widal appeared nearly exclusively in movies directed by Urban Gad.
In 1920, Maria Widal already made her last films, Das Lied der Tränen/The Song of Tears (Fritz Bernhardt, 1920) and Graf Festenberg/Count Festenberg (1922) directed by Friedrich Zelnik and starring Charles Willy Kayser.