Was Joseph engaged or the guardian of Mary?

ACCORDING TO THE HOLY QURAN

No, Zachariah was her only guardian. Zachariah was a prophet, the father of John the Baptist, and we are told by Prophet Muhammad, that Zachariah was also a carpenter. This statement was recorded by the scholar of Prophetic quotations, Imam Nawawi and can be found in his book "The Gardens of Righteous People".