YOU SAID:
Hello, I have a friend whose name is Marcus.
INTO JAPANESE
こんにちは、マーカスという名前の友人がいます。
BACK INTO ENGLISH
Hi there is a friend named Marcus.
INTO JAPANESE
こんにちは、マーカスという友人がいます。
BACK INTO ENGLISH
Hi there is a friend named Marcus.
That didn't even make that much sense in English.