Mysterious family lost by time

After researching my family history, I have come to the conclusion that these may be family members by blood but not through love. I believe that this family released a son on theirs (my great grandfather)for adoption but throughout the years records have not been properly placed. Therefore the mystery of the bloodline may never be solved. Someday I hope to obtain information that will confirm any kind of connection or not. UPDATE- 7-8-15- These are some of my family members!