Prudence was born in 1852. She passed away in 1918.
Find A Grave, database and images (https://www.findagrave.com : accessed 01 April 2018), memorial page for Prudence Angeline Dunlap Koen (9 Jan 1852–5 Nov 1918), Find A Grave Memorial no. 8537353, citing Caradan Cemetery, Caradan, Mills County, Texas, USA ; Maintained by Phillip Snow (contributor 46486618) .
Prudence Angeline and her younger sister were two of 17 surviving children of the Mountain Meadows Massacre in UT, 9/11/1857. They were the daughters of Lorenzo and Nancy Wharton Dunlap, who were slain in the massacre along with 118 brave souls on the Fancher-Baker wagon train on their way to CA. She was married to Claiborne Hobbs Koen in Boone Co., AR and moved to Texas in 1878 and raised their family in Hamilton and Mills Co., Texas.