Jacob Leander STILL has nickname Jake. Fifth child of Robert Still b. 1833 Ohio and Dulcenia (McWIlliams) Still b 1837 Indiana. Went to Liberal, Kansas with older brother Solomon Doizer Still b. 1857. Just had e-mail contact with decedents of Solomon Doizer Still and they are just starting on researching the name.
PS.
Thank you for the WWI link just need to check other counties. And maybe they both had all girls that would be in the age range for the war.