Demarchage
In short
Demarchage is a misspelling or a phonetic variation of the surname Demarchelier, most notably associated with the late French fashion photographer Patrick Demarchelier.
In plain words
It is not a standard dictionary word. It usually appears when people try to spell the name of the famous photographer who worked for Vogue and Harper's Bazaar.
A simple example
A person searching for famous fashion photography might accidentally type Demarchage into a search engine instead of Demarchelier.
Why it matters
Correct spelling is important for finding specific historical records and professional portfolios in the fashion industry. Misspelling names can make it harder to credit artists properly.
Easy to mix up
It is easily confused with the actual surname Demarchelier.