Question: Who is older, Johann Wilhelm Andreas Pfaff or Irina Mikhailovna Raievskya?
Sentence (from "Irina Mikhailovna Raievskya"): She was Duchess of Mecklenburg by her marriage to her second husband, George, Duke of Mecklenburg, who was the head of the House of Mecklenburg- Strelitz from 1934 until his death in 1963.
Relevant evidence: No