The separation of 'J' from 'I' was a slow, centuries-long process in orthography, the system for writing a language. While the differentiation began as early as the 1300s, it was Gian Giorgio Trissino's 1524 treatise 'Ɛpistola del Trissino de le lettere nuωvamente aggiunte ne la lingua italiana' that formally proposed 'J' as a distinct consonant sound. This was part of a broader Renaissance effort to clarify and systematize language. Even after Trissino's work, adoption was gradual; printers and