His death certificate records Horald A. Leffler, age 7 years 8 months 16 days, born 14 Jan 1908 in Mo., died 10 Oct 1915 in Marceline, Linn Co., Missouri, father Alexander Lefler, mother’s maiden name Lytha Riddle, both born in Mo., cause of death general tuberculosis, contributory tuberculosis of spine, informant Alexander Lefler, burial in Mt. Olivet.

(Note that Alexander himself died just 19 days later.)