Everett Rufus Milligan

I am in search of a Everett Rufus Milligan, born around 1898-1900, probably in FL, death unknown. Was married to Lillie Mae Henderson of Laurel Hill, Okaloosa Co. FL, both moved to Blountstown supposely.Everett traveled back and forth between Laurel Hill and Blountstown an supposely was killed for a small sum of money between these places.Lillie Mae Henderson Milligan was pregnent at this time and she married John B Bryant, who raised the child as his. Only info I have found on Everett Rufus(Rufus Everett) Milligan is his Draft Registraation Card found below:

United States, World War I Draft Registration Cards, 1917-1918, Everett Rufus Milligan
name:               Everett Rufus Milligan
event:               Draft Registration
reg date year range:       1917-1918
event place:        Okaloosa County, Florida, United States
gender:               Male
birth date:        07 Jul 1899
birthplace:        United States
country of c'ship:        United States
nara pub title:        World War I Selective Service System Draft Registration Cards
nara pub #:        M1509
film number:        1556933
digital folder #:        005150540
image number:        01234

Thank You in Advance for any help.
Leesa J Pheasant Stevens