Her death certificate (scanned online at the Missouri State Archives web site) records Lucelia Downing, residence 109 E. North St., Warrensburg, Johnson Co., Mo, age 79 years 2 months 25 days, born 20 Apr 1855 in Johnson Co., Mo., died 15 July 1924 in Johnson Co., Mo., father Betard Brown, b. Ky, widow, late husband J. Morris Downing, mother’s maiden name Roberts, b. Ky, cause of death cerebral hemorrhage, informant Mrs. Lottie Trader, 109 E. North, Warrensburg, burial in Oak Grove Cemetery.

Judging by the census record, which listed her as age 4 in June 1860 and age 3 in July 1870, she may really have been born in 1856.

1880 census of Fayettesville, Johnson Co., Missouri, enumerated 11 June, lists on p. 13 as family #99:
Oates, Wesly, 37, druggist, b. Va Va Va; Lucelia, 24, wife, b. Mo Ky Ky; Thomas S., 5, son, b. Mo Va Mo; Lottie M., 2, dau, b. Mo Va Mo.