Doing some research on the Haggadah ..
What is the oldest copy ? 2,000 years ago in Safed ? I thought it was older ....
The oldest surviving complete manuscript of the Haggadah dates to the 10th century. It is part of a prayer book compiled by Saadia Gaon. It is now believed that the Haggadah first became produced as an independent book in codex form around 1,000. (Wiki)
According to some the Haggadah was written during the lifetime of Rabbi Yehudah HaNasi, the compiler of the Mishna. The Malbim theorizes that the Haggadah was written by Rav Yehudah HaNasi himself around 200 AD
Judah ha-Nasi (Hebrew: יהודה הנשיא, Yehudah HaNasi or Judah the Prince) or Judah I, also known as Rabbi (רבי) or Rabbenu HaQadosh (רבנו הקדוש, "our Master, the holy one"), was a second-century rabbi and chief redactor and editor of the Mishnah. He was a key leader of the Jewish community during the Roman occupation of Judea. According to the Talmud he was of the Davidic line, the royal line of David, hence the title nasi "prince". The title nasi was also used for presidents of the Sanhedrin.Judah HaNasi died on 15 Kislev, AM 3978 (around December 1, 217 CE).
The Haggadah |: https://www.myjewishlearning.com/article/the-haggadah/
A detail from the Sarajevo Haggadah, in which maror, the bitter herb, is illustrated with an artichoke. (Wikimedia Commons)