Yes, it is a very common Sankrit, Hindi, Indian Name used in almost all regions, vernaculars across India.
Yohan
means another name for Lord Krishna an avatar of Lord Vishnu. Used in
the ancient Tamil Language which has 40 % sanskrit words
Germany and all european/western including Latin owe their origin and grammar to Sanksrit
The
Germans were soaked with a wrong non factual and discarded Aryan theory
written by propagandists and that's why they used Indian religious
symbols "inverted swastik" for white supremacy.
The guy above has no knowledge of history!