It was to both of them.
Jeremiah the prophet preached to the people of Judah during the reign of kings Josiah, Jehoiakim, and Zedekiah. He prophesied about the impending destruction of Jerusalem and the exile of the Jewish people because of their disobedience to God. His messages called for repentance and warned of the consequences of their actions.
The name Jeremiah first appears in 2 Kings (2 Kings 23:31), but many scholars believe the first reference to the prophit Jeremiah is in 1 Chronicles (1 Chronicles 5:24).
The prophet Jeremiah served in the time of Josiah, Jehoahaz, Jehoiakim, Jehoiachin, and Zedekiah.
None of the apostles wrote about the Kings except in passing reference (usually to David). If you are looking for the author of the books I & II Kings, that is traditionally excepted to be the prophet Jeremiah.
Tha name Jeremiah means "God exalts." It comes from Hebrew. Jeremiah was a major Old Testament prophet, and is credited with four books thereof: the Book of Jeremiah, Kings 1 and 2, and Lamentations.
It cannot be known for certain who wrote the two books of Kings. Jewish tradition asserts the prophet Jeremiah to be the author, although it is worthy of note that even he used a scribe Baruch.
Jeremiah is accredited with writing the book of Jeremiah and Lamentations, both found in the Old Testament. Jewish tradition also ascribes the Book of Kings (1 Kings and 2 Kings) to Jeremiah.
The prophet Jeremiah wrote the book of Jeremiah. It is actually a fairly long book, with 52 chapters in it. Jeremiah is a book in the Old Testament, found after Isaiah and before Lamentations. Lamentations was also written by Jeremiah, and is like an appendix to the Book of Jeremiah.
Jeremiah, sometimes called the weeping prophet, was surrounded by a nation ripe for judgment. The apostate nation of Israel had refused repeatedly to heed the warnings of this man of God, like others before him. He foresaw the results of their sin and continuing rebellion against their God. Jeremiah himself was falsely accused of treason and thrown into a muddy dungeon. He also had a scroll of prophecy burnt by the king.
Jeremiah and Lamentations.
The authorship of 1 Kings in the KJV is traditionally attributed to the prophet Jeremiah. However, modern biblical scholarship suggests that multiple authors contributed to the text, and it was likely compiled and edited over time.
Name of Book: 1 Kings & 2 Kings Written by the Prophet Jeremiah while he was in Judah and Egypt Writing Completed (B.C.E.): 1 roll 580 Time Covered (B.C.E.): c. 1040-580