I have different dates for her; one set is from the Bedford county Cemetery Book, the other from a family Bible in Tennessee. Also the surname appears differently. In the family Bible her family is recorded as Landis, other articles as well.
Obit from the Bedford Co. Tenn Bible Records ..vol 2
Mrs Phoebe Landers, Mr William B. Landers' mother, Mrs. Phoebe Ann Landers died at her home newar Columbia, Thursday July 16, 1825 aged 72 yrs. She was a widow her husband having preceded her 12 years before. Burial in Bedford County at Wheeler Cemetery near Hickory Hill, Friday. She leaves 4 sons, 1 daughter, 3 sisters & 3 brothers
*I will be acquiring a copy of this article and make any necessary corrections to this site.
There is a bronze plaque in memory of her in the Landis Cemetery located about 1 mile south east of Shofner Lutheran Church on Thompson Cr. in Bedford County Tenn. {pg.301 Bedford Co. Cemetery Book}