Johann von Siemienski

• 
• Born on May 25, 1894 in Lemberg
• Deceased on June 10, 1963, at the age of 69 years

Parents

• Stanislaus von Siemienski (1864 - 1918)
• Sophie Tarnowski (1869 - 1954)

Family

• Married with Natalie Tyszkiewicz