Marion Creed was married to Mary DILLON, not Mary J. Foster, as you can see below.
JOHN B. CREED MARY J. FOSTER 17 Feb 1887StoddardMO MARION CREED MARY DILLON 24 Aug 1888StoddardMO
I am doing research for a friend and would love more information on John B. Creed.I don't know if this is the same bunch that you wrote about because the dates of birth are off a little bit.However, since they both married in the same county of MO, I am inclined to believe that they are probably brothers.