Vitek/Krizan

Trying to locate info regarding my great-grandparents, Martin P. Vitek and Marie Krizanova

They were born in Knezdub, Moravia in 1874 & 1875 respectively. They immigrated to USA in 1903, Marie died in 1938 in Blissfield, Michigan. No record of Martin except he was institutionalized somewhere in Michigan or Ohio and must have died between 1930 and 1938. Marie was listed as widow on her death certificate.

Would like to find out more about their parents. It seems both families were from Knezdub.

Any help would be appreciated

Mike