Jay Stanley Davis married Ruth Evelyn Kay. Based on census records, they were married in the fall of 1919 and divorced within 10 years.

June 1, 1900 census. DAVIS family.
Hiawatha, Brown Co., KS.
Jasper N., head, b.May 1850, 50, marr.28yrs, b.Wisc., parents b.England, cigar maker.
Emma L., wife, b.Sept 1856, 43, marr.28yrs, mother of 11(10living), b.Wisc., parents b.OH.
Ross H., son, b.May 1880, 20, single, b.KS.
Stella L., dau, b.Oct 1882, 17, single, b.KS.
Stanley J., son, b.Sept 1884, 15, b.KS.
Benjamin?, son, b.Jun or Jan 1887, 13, b.KS.
Gladys, dau, b.Jan or Jun 1891, 9, b.KS.
Pauline E., dau, b.Apr 1895, 5, b.KS.
Eunice M., dau, b.Aug 1896, 3, b.KS.
Lenor(a?) H., dau, b.July 1899, 10/12, b.KS.

Jan 1, 1920 census.
Springfield Twp., Summit Co., OH.
Robers, May, Head, 45, Wd, she & her parents b.MO, Rubber worker, Power sewing machine.
Davis, J. Stanley, son in law, 35, marr, he & parents b.Wisc., Painter & Paper hanger.
Purcell, Joseph L., son, 20, S, b.MT, father b.MT, mother b.MO, Telegraph operator, Western Union.
Davis, Ruth Evelyn, Dau, 27, marr, b.MT, father b.MT, mother b.MO, Rubber worker, Power sewing machine.
Pritchard, Nellie N., Dau, 18, marr, b.MT, father b.MT, mother b.MO.
Pritchard, Juanita, Grand Dau, 2/12, b.OH, father b.W.V., mother b.MT.

April 1, 1930 census.
Blue Twp., Jackson Co., MO.
Davis, J. S., Head, 45, Div, marr@35, b.KS, father b.OH, mother b.Wis., Paperhanger, Odd jobs.
Clark, Thalia N., Niece, 24, Div, marr@19, she & her parents b.KS.
Clark, Norman, Grand-Nephew, 3 7/12, b.MO, father b.MO, mother b.KS.

Note that the born date entered does not agree with the date in the death notice below.

                         DEATHS
Davis—J. Stanley Davis, 75, of Kansas City, died Saturday, February 11, 1961, at Jackson County hospital, Kansas City, Mo. He had been in ill health the past five years. Mr. Davis was born in Hiawatha February 15, 1885, and lived in Kansas City about 40 years.
    His survivors include two brothers, Ross Davis of Long Beach, Calif., Ben Davis of Sonshone, Calif., four sisters, Mrs. Stella Chaffee of Lincoln, Nebr., Mrs. Ed Brown of Detroit, Mich., Mrs. Bernard Anderson of Yakima, Wash., Mrs. Wes Catuska of Ottawa, also, several nieces and nephews. Mrs. Walter Schrader of Hiawatha is a niece.
    Funeral services will be conducted from the Bethany Reformed church, Hiawatha, Tuesday afternoon, February 14, at 2 o'clock with the Rev. A. O. Engelmann officiating. Interment will be at Hiawatha cemetery.
   —The Hiawatha Daily World (Hiawatha, KS)
               Mon. Feb 13, 1961, p.1.


(More on Ruth, the girl he married)
June 1, 1900 census.
Bozeman, Gallatin Co., Montana.
Purcell, Ellen, Head, b.Oct 1841, 58, Wd, 5 children, 4 living, b.NY, parents b.Ireland.
Purcell, James P., son, b.Dec 1870, 29, S, b.MT, father b.Ireland, mother b.N.Y.
Purcell, Joseph E., son, b.Mar 1879, 21, S, b.MT, father b.Ireland, mother b.N.Y.
Purcell, Mary A., Dau, b.Jan 1883, 17, S, b.MT, father b.Ireland, mother b.N.Y.
Purcell, Thomas F., son, b.Mar 1872, 28, marr5yrs, b.MT, father b.Ireland, mother b.N.Y.
Purcell, Macca, Dau-in law, b.Dec 1874, 25, marr10yrs, 4 children(2 living), she & parents b.MO.
Kay, Ruth, Granddaughter, b.May 1892, 8, b.MT, father b.Michigan, mother b.MO.

April 15, 1910 census.
School Dist.7, Yellowstone Co., MT.
Purcell, Thomas, Head, 38, M1, 15yrs, b.MT, father b.Ireland, mother b.Canada, Detective.
Purcell, Mecca, Wife, 36, M2, 15yrs, 5 children(3 living), b.MO, father b.IN, mother b.MO.
Purcell, Joseph, Son, 10, b.MT, father b.MT, mother b.MO.
Purcell, Nellie, Dau, 8, b.MT, father b.MT, mother b.MO.
Kay, Ruth, Stepdau, 18, S, b.MT, father b.Mass., mother b.MO.