It's not. However, it's based on the name John, which comes from the Hebrew name Yokhanan, who was a high priest mentioned in the Book of Nehemiah (Nehemiah 12:22-23).
in old testament
The palidrome for the name of a woman in the Old Testament is "Hannah".
No, there is no other name for the Christian Old Testament. Although the Christian Old Testament was based on the Tanach (Jewish Bible), they are not the same text.
In the old testament the first womens name is Eve. Adams wife.
There isn't 46 books in the old testament.
Janice Crystal's birth name is Janice Louise Goldfinger.
Janice Acquah's birth name is Janice Violet Bondzewa Acquah.
Janice Montelione's birth name is Janice Rivera.
Janice Long's birth name is Janice Chegwin.
Janice Kaufman's birth name is Janice Bernstein.
There is no book by the name of John in the Old Testament, nor is the name John mentioned in the Old Testament. The name John is a Greek name that comes from a Hebrew name. The Greek is Ἰωάννης which is pronounced ee-o-an'-nace and the Hebrew name it comes from is יוחנן which is pronounced yo-khaw-nawn'. So it is possible that the Hebrew equivalent of the name John does exist in the Old Testament.
The Nile River is an important river mentioned in the Old Testament.