So the prefecture (accidentally) missed this person in their September report?
それで、県は(偶然に)9月の報告書でこの人を逃しましたか?
I think there are two possibilities.
1.Kiyoshi Konno(今野義憙) wants to be anonymous. Akiko Goto(後藤秋子) is just the oldest living person who wants to release one's name. It is possible for someone anonymous older than her to exist. The oldest living person in Sakata City who was born in January 1913 is also not in the top5 list this year.
2.Kiyoshi Konno(今野義憙) died between September 1st and 15th. This is similar to Yokichi Asano(浅野與吉) and Miyoshi Kuzume (葛目美良). However, the top5 list is based on September 1st 2019. Sakie Shoji(庄司サキエ) died before September 10th but she is still in the top5 list, so the possibility of this is low.