There is an obit for aJohn D PATTERSON d. 7-2-1930 Wayne Co, but this guy was b 1847....not yours.
I'm not finding your John on OH DEATHS, or OH DEATH CERTS. Did he move to another state?
There IS an obit for Florence d. 10-12-1918, located Wooster Library.DC ...labs.familysearch.org...she died in the flu epidemic.
John is the s/o David & Mary.Don't know if yours, as age not given....obit for Mary PATTERSON d 8-11-1895, Wayne Library.I didn't find David or Mary 1900 census, but since Reuben & John are in 1900 Wayne Co, I'm thinking perhaps the parents were also in Wayne.
David/Mary; ch: Emma, John, Reuben are in 1880 Richland Twp, Defiance OH