Under emotional stress, Teishi delivered Imperial Princess Bishi, the second Princess, on the night of January 18, 1001; however, before dawn of the next day, the afterbirth was delayed and Teishi died.
心労に苛まれた定子はその年の暮れ、12月15日夜に第二皇女び子内親王（び＝女偏に美）を出産し、後産が降りぬままに翌日未明に崩御。