William P. Sims lived in Ellis County, Texas, in 1900, 1910, and 1920. Allie Sims was head of the family in Ellis County, in 1930.
The will of W. P. Sims was filed in Ellis County, Texas, 25 September 1928. Legatees were Charles, Florine, and W. P. Sims, Jr.
Dallas Morning News, 16 September 1928: Services were held for Dr. W. P. Sims of Boz. Waxahachie, Texas, September 15. Two thousand persons attended funeral services for the late Dr. W. P. Sims of Boz, widely known pioneer Ellis County physician. Impressive rites were conducted by three ministers. Dr. Sims, who had treated thousands of persons during his career in the Boz community, is survived by his wife and five children: Will B. Sims, Charles P. Sims, Mrs. Ross Garrett, W. P. Sims, Jr., and Coleman Sims. He also leaves a brother, O. B. Sims of Waxahachie, and a sister, Mrs. Bettie Johnston of Five Points.
Dallas Morning News, 5 October 1964: Mrs. Allie Sims. Waxahachie, Texas – Funeral services for Mrs. Allie Sims, 81, a Waxahachie resident for seventy-six years, will be held at 2 p.m. Tuesday in the College Street Church of Christ here. Burial will be in Bethel Cemetery. Mrs. Sims, who was born in Cedar Hill, died here Sunday. She was a member of the College Hill Church of Christ. Survivors: two sons, W. P. Sims of Dallas and Capt. Coleman Sims of Norfolk, Virginia; a sister, Mrs. S. O. Golliday of Midland; a brother, Ben Wolcott of California; and five grandchildren.