Who called chaucer as father of English poetry?

While there's no single definitive source that *first* labeled Chaucer the "Father of English Poetry," the title is widely attributed to Geoffrey Chaucer himself in his writings.

Here's why:

* Chaucer's Self-Awareness: Chaucer was acutely aware of the innovative nature of his work. He experimented with language and form, paving the way for later poets. He even references his own impact in works like *Troilus and Criseyde*, where he compares himself to a "nightingale" singing a new song.

* Literary History: Chaucer's impact on English literature is undeniable. He popularized the use of Middle English, a language that was then considered "vulgar" and not suitable for literature. He also introduced new poetic forms like the "ballade" and the "roundel."

* Legacy: Subsequent generations of poets, including those of the Renaissance, recognized Chaucer's influence. They saw him as a groundbreaking figure who established a foundation for English poetry.

Therefore, while no single person can be credited with the title, Chaucer's own awareness of his impact and his undeniable influence on the development of English poetry cemented his place as the "Father of English Poetry."