Daniel is a masculine given name and a surname of Hebrew origin. It means, "God is my judge".
Hadassah is her Jewish name, she was re-named Esther, while her previous generation was taken, into captivity. Just like In Babylon, Daniel, he was re-named Belteshazzar. Daniel & three Jews, after being taken to Babylon, were given Babylonian names, also. Hananaih was re-named Shadrach, Mishael was re-named Meshach & Azariah was re-named Abednego.
I assume by "nickname" you mean the Babylonian name he was given as a member of the court of Nebuchanezzar. Daniel's Babylonian name was Belteshazzar.
Daniel would be traditionally male, while Danielle would be female.
The more common form has included a I, as "Danielle" (feminine of Daniel). But several prominent individuals have had the Danelle version, and there are still other variants.
The common spellings of the given name are Daniel (boy) and Danielle (girl). An alternate spelling could be Daniell (gender unclear).
Daniel is a very popular masculine given name. Please be more specific.
The novel you are referring to is called Robinson Crusoe.
Danny Pitts' real name is Daniel Pitts, or any other given legal name he might have.
The unit 'farenheit' is named after it's founder Daniel Gabriel Farenheit.
Daniel Alter's birth name is Daniel Zeev Alter.
Daniel Kostins's birth name is Daniel Kostinskiy.