Question: Who is the mother-in-law of Queen Insun?
Answer: Queen Munjeong

1545–1567) was the 13th king of the Joseon Dynasty of Korea. He was the second son of Jungjong, and his mother was Queen Munjeong, who was Jungjong's third queen. He became king in 1545 at the age of 12 following the death of his half-brother, Injong