Yaqub ibn Ishaq al-Hadrami taught at Basra and died in 205 AH, a generation after Abu Amr, whose reading had made the city one of the recognised centres of recitation. He is the ninth of the ten, one of the three that Ibn al-Jazari restored to the canon alongside Abu Jafar and Khalaf, and his standing among the reciters of his own city was high enough that the biographical literature treats him as the leading Basran authority of his generation.
Basra is worth a word here. It was founded as a garrison in the first years after the conquests, which means that unlike Mecca and Medina it had no recitation of its own to inherit: everything had to be carried there by Companions and their students who settled in the town. That gives the Basran chains a slightly different shape from the Hijazi ones, and it is why two readers from a single relatively young city could both be admitted to a canon of ten.
Yaqub is transmitted by Ruways and by Rawh, both of them Basrans who read to him directly rather than through an intermediary, which makes his the shortest pair of chains in the canon between a reader and the men who carry him. Like the other two readings admitted after Ibn Mujahid's seven, Yaqub's spent some five centuries in a position that is easy to misdescribe. It was never rejected, never held to be unsound, and never removed from the teaching of the discipline. It simply stood outside a list that had been drawn up for reasons of arrangement, until Ibn al-Jazari re-examined the grounds and found no basis for keeping it there. Today it is recited in examination and taught in the schools of recitation, though no region uses it as its ordinary practice.