Yes there is a Franklin ( Frank) Dentler. Born September 15th 1847 in Parkville Michigan, Park township. He married Harriet Hamilton in 1870.I have an Obituary on her that reads, !931 " Mrs. Dentler was Harriet Hamilton before her marrage to Frank Dentler of Parkville Michigan in 1870. Her Family was one of the firstsettlers of that community. She was the last member of that family to pass away and her death marks the end of one of St. Joseph County's oldest pioneer families. She was born in Constantine Michigan."
Harriet and Frank had three sons, Fred born in parkville July 1872. Died May 1934. Frank Jr. born in parkville March of 1876 .Died March 1949. Jonnnie Born 1883. Died March 1885.
Then there was only one Grandchild. Clark whom was born to Frank Jr.
Now I have plenty on information on the Dentler side but none on Hanilton side, sorry I do have a photo of Harriet Hamilton Dentler standing with frank Jr. Clark and Clarks only Child Lillian Dentler, she in a infant in the photo. Let me know if I could be of any assistance to you in your research, I live just a few miles from Constantine mich. I am going to go through some of my papers, it seems to me I have seen some things on a John Hamilton, I will let you know if I do.