Charles G. Burk family photo

A photo of Charles G Burk with wife Mary Ethel Bowman B:12 JAN 1890 in Marion, Kentucky, United States D: 1 FEB 1958 in Jefferson, Kentucky, USA. His step son in back is Richard P Mulverhill, boy in front Floyd B Burk and little girl was my grandmother Geraldine Clarissa Burk. I did find them in the 1930 United States Federal Census. List Charles as being born abt 1880 in Pennsylvania and he said his parents were born in Poland. I know nothing else about him.
People in photo include: Mary Ethel (Bowman) Burk , Richard P Mulverhill, Floyd B Burk, and Geraldine Clarissa Burk