"another email address of his"?"another his email address""his another email address"

[thincat]

Hi,

I have a question regarding the place of the possessive determiner, "his," I should put in a sentence.

a) another email address of his (I know that there is a saying of "a friend of mine", but I don't know if it is good to say "another email address of his")

b) another his email address

c) his another email address

Which one(s) is/are grammatically acceptable?

If I am going to put it in a sentence beginning with "I do not know...," which one(s) is/are more suitable?
Thank you!

[Rover_KE]

a) another email address of his

b) another his email address

c) his another other email address

Rover

[JarekSteliga]

c) his anotherother email address


Rover

NOT A TEACHER

Could, "... his another email address" absolutely never be used?

I am thinking of a situation when "he" used to have a number of email addresses (with which perhaps we were familiar), but suddenly one day he used a new one. Could we not then say, "We do not know his another email address" meaning, "We know that he has a new email address (beside those which we know already), but we do not know what it is"

[bhaisahab]

NOT A TEACHER

Could, "... his another email address" absolutely never be used?

I am thinking of a situation when "he" used to have a number of email addresses (with which perhaps we were familiar), but suddenly one day he used a new one. Could we not then say, "We do not know his another email address" meaning, "We know that he has a new email address (beside those which we know already), but we do not know what it is"

No, it's completely incorrect in all contexts.