You really don't give much to go on in your query. I'm assuming 1884 is when Bertha was born????
1900 census Bowie Co, TX:
Morris, Peyton, h, b May 1857, 43, md 16 yrs, b TX, KY, MS
" Lula, w, b Feb 1867, 33, md 16 yrs, 7 ch, 7 lvg, b AR, LA, SC
" Bertha, d, b Dec 1884, 15, b TX
" Ora, d, b Oct 1885, 14, b TX
" Luther, s, b Nov 1887, 12, b TX
" Allie, s, b Mch 1891, 9, b TX
" Leroy, s, b May 1893, 7, b TX
" Nettie, d, b Jul 1895, 4, b TX
" Glenn, s, b Nov 1898, 1, b TX
In another query you say 1884-1907 she lived in Bowie Co, TX and another she is buried in Brazos Co, TX. Your website says "Mabel" was just short of five when Bertha died, but you didn't say who Mabel was. You leave little gaps in your information.
It looks like Brantley is remarried in 1910 in Bowie Co, TX.
1910 census Childress Co, TX:
Morris, Peyton, h, 52, M(2), 26, b TX, KY, TN
" Lula L., w, 42 M(1), 26 yrs, 9 ch, 8 lvg, b AR, LA, AL
" Luther P., s, 21, sgle, b TX
" Lee (?), s, 16, b TX
" Nettie M., d, 14, b TX
" Glenn P., s, 11, b TX
" Ruby L., d, 8, b TX
" Audrey B., d, 5, b TX
1920 census Dallam Co, TX:
Morris, Payton[sic] M., h, 62, md, b TX, KY, TN
" Lula, w, 53, md, b AR, LA, GA
" Nettie, d, 23, sgle, b TX
" Ruby, d, 18, sgle, b TX
" Audry, d, 15, sgle, b TX
The 1910 census shows Peyton had been married before, this might be him as a widower, and little Evie might be his daughter.
1880 census Denton Co, TX:
Category: Name;Relationship to head of household; Marital Status; Gender; Race; Age; Birthplace; Occupation; Father's Birthplace; Mother's Birthplace.
Annett MORRISWifeMFemaleW59TNKeeps HouseTNTN
Martha G. MORRISDauSFemaleW42TXAt HomeMOTN
Lousana MORRISDauSFemaleW17TXAt HomeMOTN
Evie O. MORRISNieceSFemaleW1TXTXTX
1860 census Bowie Co, TX page 11:
Morris, Lee, 57, b MO - land 22100/personal 3860 - farmer
" S.S., 40, b TN
" R.C., 13, b TX
" Clinton, 12, b TX
" F., 9, b TX (female)
" Mary H., 7, b TX
" Mark, 5, b TX
" Jane, 4, b TX
" Patton[sic], 3, b TX
" Cullin, 1, b TX
Dardin, Joseph, 22, Common School Teacher, b GA
Page 8 is George and his first two children were born Rep. TX - Republic of Texas.
"Republic of Texas: Poll Lists for 1846" shows both Lee and George in Bowie Co, TX.
There are others working on this Morris line. Go to Rootsweb WorldConnect -- http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgihttp://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi -- Type in Curtis Morris born 1755 VA. He is the father of your Lee and his brother George. Click on first match, she has lots of info on the family, then click on son George and you will see more on him as she descends from George. She does wonder about nephew Payton living with her George in 1880, you can contact her and let her know about your Lee.
Happy Hunting (^_^)