Is there a global HS Code? No. You should know exactly what the specific number in your specific country. But the first 6 digit numbers are supposed the same across the whole world. Each country can modify by adding two digits or four digits as per their requirements without changing first six digits.
BLENHEIM, in Hanover, is a place-name found also in Manchester, and originates from Bavaria, Germany. Blenheim (in Germany) was a site of a great battle, which no doubt led to use of the name in Jamaica.
The name of Jamaica in New York City derives from Yameco, a corruption of a word for beaver in the Lenape language spoken by the Native Americans who lived in the area at the time of first European contact. The y sound in English is spelled with a j in Dutch, the first Europeans to write about the area.