In which language should I add the translator's name?

[Joseph]

Do I have to add the translator's name in both languages (English and translated language)?

[lethe]

That depends. Could you provide more information (language of the edition in question, have they translated or written other books)?

[Joseph]

lethe wrote: "That depends. Could you provide more information (language of the edition in question, have they translated or written other books)?"
Sure. It's the Malayalam translation of Viktor Frankl's Man's Search for Meaning: ഇരുട്ടിൽ നിന്നും വെളിച്ചത്തിലേക്ക് Iruttil Ninnu Velichathilekku

I'm not sure whether the translator has done other books.

[lethe]

In that case, only the Malayalam name is necessary. I removed the name in English.

For future reference, initials should be added without a space between them, so P.C. instead of P. C. :)

[Joseph]

Thank you.