Now the word of the LORD came unto Jonah the son of Amittai, saying,
All Commentaries on Jonah 1:1 Go To Jonah 1
The Hebrew tradition is that Hosea, Amos, Isaiah and Jonah prophesied at the same time. This is historical tradition.
he book of Tobit, though not in the canon of the Hebrews, is surely used by the men of the Church, and he mentions Jonah when Tobit says to his son, "my son, I am old and ready to leave this life. Take your sons and go to Media, my son. For I know what the prophet Jonah has said about Nineveh: she will be destroyed"(Tob. 14, 3.).