How do you spell king ferdinan?

The spelling of "King Ferdinand" depends on which Ferdinand you're referring to, as there have been many throughout history.

Here are a few possibilities:

* Ferdinand I of Spain: Ferdinand I of Spain is usually spelled "Ferdinand". This is the most common spelling for the name.

* Ferdinand II of Aragon: Ferdinand II of Aragon is also usually spelled "Ferdinand".

* Ferdinand I, Holy Roman Emperor: This Ferdinand is also spelled "Ferdinand".

If you are referring to a specific King Ferdinand, please provide more context, and I can give you the correct spelling.