According to Wikipedia…
“The word ‘purple’ comes from the Old English word purpul which originates from the Latin purpura. This in turn is derived from the Koine Greek πορφύρα (porphyra), name of the dye manufactured in classical antiquity from the mucus-secretion of the hypobranchial gland of a marine snail known as the Murex brandaris or the spiny dye-murex.
The first recorded use of the word ‘purple’ in English was in the year AD 975.”
Have a GRAPE day!