Such people are drapers, clothiers, cloth merchants, or dry goods merchants.
Draper
sellsman
One who sells clothes is called
Draper
who is a mercer
Textile Merchant
A person who sells jewels is called a jeweler.
A haberdasher.
A glomber
Textile Merchant
who is a mercer
An author is a person who writes and sells books.
The person who sells drink is known as sellsmen
baker
A person who sells books is commonly referred to as a bookseller or a book vendor.
You call a person who sells flowers a (Florist)
A person who sells ship supplies is called a chandler
A tailor or a seamstress but generally there is no name for someone who makes and sells clothes
A person who sells jewels is called a jeweler.
fishmonger
A chandler.