@blackknight95857669 Apparently, it is a recurring family nickname for Kathleen. Kick's great-aunt Kathleen used it, though her aunt Kathleen doesn't appear to have.
https://en.wikipedia.org/wiki/Kathleen_Cavendish%2C_Marchioness_of_Hartington
@00pi TIL. Still odd, but so very dwarfed by everything else there.
@00pi Unabomber level, basically.
@blackknight95857669 More like Manson, I think, but with much less charisma.