Porter would only be capitalized if it were someones name.
in The King ***
Yes
No.
yes
No. It's not necessary.
No.
The only time you would capitalize the word south is if it were at the beginning of a sentence or part of someone's name.
No. When simply referring to a podiatrist, there is no need to capitalise it. It would be capitalised if it was part of a title on a sign, such as "T.M.Smith, Podiatrist".
You do, because they are proper nouns.
If a person is referring to the monarchy system of government, it isn't necessary to capitalise it. However, if the person is referring to the British Monarchy itself, then it is proper to capitalise it.
Greek Mythology or Greek Myth.
When you are referring to the planet Earth.At the beginning of a sentence.