Antonietta Dell'Era was a German ballet dancer, born in 1860 in Milan, who died in 1945.
Biography
Antonietta Dell'Era (10 February 1860 Milan — 22 June 1945 Berlin) was an Italian prima ballerina best known for originating the role of the Sugar Plum Fairy in Tchaikovsky's ballet, The Nutcracker (1892).
From the Wikipedia article “Antonietta Dell'Era”, licensed under CC BY-SA 4.0.
Facts from Wikidata (Q4776283), CC0.