Peter Giles

“ As, however, in many cases initial i had the consonantal value of the English y in iugum (yoke) , &c., the symbol came to be used for the value of y, a value which it still retains in German: Ja! jung, &c. Initially it is pronounced in English as an affricate dzh. The great majority of English words beginning with j are (1) of foreign (mostly French) origin, as “jaundice,” “judge”; (2) imitative of sound, like “jar” (the verb) ”