COOK/EVANS IN DUBOIS Co INDIANA in 1850s

Looking for parents, siblings of Edward COOK and Mary EVANS who were married DEC 3,1857 in Dubois Co Ind. They had 8 children icluding my GFather George Clellie(?) COOK who married Sarah Ellen BLACKBURN May 18,1898
in Dubois Co Ind. Where did they come from?
I will share all I have. All information appreciated. Thank you.