Where does “મર્ચન્ટ” come from?

મર્ચન્ટ (Gujarati) comes from English merchant, from Middle English marchaunt.

Ancestry of “મર્ચન્ટ”, step by step

Step	Language	Word	Meaning
1	English	merchant	A person who traffics in commodities for profit;...
2	Middle English	marchaunt	—