Read the Goryeosa ourselves for every target year
Ken pasted the Wang 2021 paper, which showed its catalogue only lists red glows, so it would never contain our white 1052 or violet 1279 records. So we pulled the original Goryeosa omen and astronomy volumes from Chinese Wikisource and built a date converter, checked against five published dates. Found: a red glow on 19 December 1268, a second witness for the 1268 to 1269 event; a comet in February 1053, a possible innocent explanation for our 1052 record; strong red glows in March 1278 and a large sunspot in August 1278; a fireball in March 1261; and confirmation of the 1279 violet glow in the original wording.
How it connects
This step led us to
A comet in the southern sky with a tail over 1 zhang, Korea, 25 February 1053
This step led us to
A heavenly dog fell in front of the Ancestral Temple, Korea, 9 March 1261
This step led us to
Red vapour in the west, Korea, 19 December 1268
This step led us to
Red vapour across the whole sky, then a red glow bright as day, Korea, 23 and 26 March 1278
This step and then
New mystery: tested the sweating sickness against tree-ring wetness
This step came after
Read the Miyahara 2022 paper Ken found