Question: Elvira Madigan's father was born in what year?
Related documents: [0]  [DOC] Gisela Antonia Brož (Brosch) (also sometimes referred to as Gisela Madigan), (4 April 1865 - 1945) was an Austrian-American circus performer, tight rope dancer, and clown. Her parents were shoemaker Joseph Brož and his wife Maria. She went to convent school in Siebenbürgen and at the age of 15 she got to know the circus family Madigans with John and Laura who at that time toured with circus Krembser in Vienna. Gisela became their foster child and got to learn tight rope dancing, this along with the couple's two year younger daughter Elvira Madigan. [END] 
[1]  [DOC] John Adalbert Madigan, (12 August 1850 - 23 August 1897) was an American circus performer and ringmaster, during the later years of his life he worked in Scandinavia. He was raised in an American circus family of Irish background. He is known for his work in U.S circus scenes between 1866 and 1869, but from 1872 he worked at Cirkus Myers in Central Europe. To this circus, the Swedish-Norwegian circus artist Eleonora Olsen, later known as Laura Madigan (mother of Elvira Madigan) came to work in 1875, the two became a couple. [END] 
Answer: 
1850
1850