My wife and I are cemetery enthusiasts an have been to many graves of notable people thoroughout American history. The farthest we have traveled is to California to see the graves of Richard Nixon and Ronald Reagan. We also went to Johnson City to see Lyndon Johnson's grave. We really love doing these things.
I looked Robert up on the familysearch.org site. His Ohio death certificate shows James W and Lillie Abrams as his parents. There is also a marriage record Marriage 09 Aug 1920 in Highland County, Ohio showing his parents as James W. Abrams and Lillian Young. His wife was Anna P. Allen.
Could it be you knew him by another name, Maybe Otto as shown on Anna Allen Abrams death certificate? Also, since you are related..I would be happy to transfer the Abrams to your care.