The wine received its name , `` Port , '' in the latter half of the 17th century from the seaport city of LOCATION@1 at the mouth of the LOCATION@2 , where much of the product was brought to market or for export to other countries in LOCATION@3 .

The wine received its name , `` Port , '' in the second half of the 17th century from the seaport city of LOCATION@1 at the mouth of the LOCATION@2 .
