I found a Tandy in the California Death records 1940-1997
TandyW. Scantlenborn 8/17/1912 in Okla. died in Los Angelos 7/5/1964 ss#563268122 Mother was Last named Garland. There is a James Scantlen b.7 May 1870 d. 8 Oct 1918 Lorena Jane Garlandb. 8 Mar 1877 d.19 May 1953,she was the daughter of Ward H. & Sophina Nail
their children are: 1.Haskell" Doc"b.20 Apr 1907 d. 19 Feb 2000,married Thelma Raye Bond b.5 Jul 1915 d.4 Jun 1965
2.Jennings Scantlen-b.29 Oct 1896 d.7 Mar 1985-WWI PVT.
3.Dwin C. Scantlen-b.22 Sep 1913-d.30 Jun 1915
4.Charles Scantlen-b.1909 d.Oct 1954 ,married Ethel Brown B.1907----maybe living?
5.Shirley Lifilie Scantlen-b.29 Mar d.6 Feb 1961,married Daisy A. Broyles
6.Tandy Walker Scantlen-b.17 Aug 1912-d. 5 Jul 1964*****
these are all buried at Haskell Co.,Oklahoma,Garland Cemetery
also found that James M. Scantlen and Lorena Garlandmarried17 Jul 1895 Indianola/Garland--Under Choctaw Marriages 1890-1907 groom index.
I have not tied your family in with mine yet ,but it may be close. Benjamin Franklin Scantlenalso in Garland/Haskell Okla. His father goes back to George Washington Scantlen b. 1830 KY and Nancy Bickley b. abt 1834 Tenn.1880 censusis very hard to read on them and children 1880 census Crawford Co,Richland Twp, pg 21.Ben F. also died in Cal as did his wife andsister,Margaret Ann Scantlen-Cochran, poss a brother -Thomas J. Scantlen. I Would like to know what you find when you go to Oklahoma.I haven't found if James is a Brother to Ben F. or not.The 1880 census is very hard to read on line.If you get get your line back tothe parents of James ,I may be able to help you some more.