No, I am not familiar with the name John Shrenk. Sounds like John Hopley came upon the Bycyrus newspaper scene twenty some years later.
This is what I know about John Hopley starting his newspaper career in Bucyrus (previously he was a teacher andan attorney).The following is from"History of Crawford County, Ohio and Representative Citizens, Vol. II," by his son, John E. Hopley, pgs. 627-630:
"In 1867 he returned to Bucyrus and in September purchased of James Robinson a half interest in the Bucyrus Journal.The following spring he purchased of Ralph Robinson the other half interest, and after the spring of 1868 he was sole owner of that paper until his death.From August, 1870, to January, 1879, he was postmaster at Bucyrus, having been appointed by President Grant.He was also postmaster at Bucyrus from 1890 to 1894, having been appointed by President Harrison.In 1887 the Bucyrus Evening Telegraph was established as an independent paper but on Jan. 4, 1895 The Hopley Printing Co. was incorporated and since that time the daily and weekly papers have been under one management, Mr. Hopley having been president and general supervisor until his death, which occurred June 3, 1904."
His family continued in the newspaper/printing business after his death, but I am unsure for how long.
Sorry I can't be of any help. . .but it was exciting to have a response to my post!!!
Still anxious to exchange information with other Rochester-Hopley descendants/cousins/researchers.