John, you wrote: "In 1880 she appears in St. Louis living with Martin A Cathey age 20 listed as a nephew"

Finnis E & Mary J. Cathay's children Morgan Co, MO Birth Records

Martin (???) O. (NOTE: looks like "O" to me and first name hard to read) Cathey is listed in the Morgan Co, MO Birth Records born 1/21/1861 as son of Finnis E. & Mary J. Cathy

Also, another daughter, Rebecca A. Cathy born 11/21/1854 daughter of Finnis E. & Mary J. Cathy Morgan Co, MO Birth Records

Finis E. Cathay enrolled Sept 26, 1862 Rolla Co H 32nd MO Reg reported as dying Small Pox Hospital Jan. 20, 1863 Young's Point, LA per card in his file..

Alonzo Cathey's St Louis City, MO death cert has birth 1/21/1861 & died 1/5/1925 lists parents as Dennis Cathey & Mary Jane Bradley
**********

Gay