HENRY, a laborious astronomer of the 17th century, was born in 1597. Though he was not without good views in the church, yet he became so enamoured with mathematical studies, that on the death of his father he became a student at Oxford, contented himself with his private patrimony, and devoted himself solely to them. On the death of Mr Gunter, he was recommended by Mr Briggs to the trustees of Gresham college, for the astronomical professorship there; to which he was elected in 1627. His friend Mr Briggs dying in 1630, before he had finished his Trigonometria Britannica, it was finished by Gelibrand at his request. He wrote several other things, chiefly tending to the improvement of navigation; and died in 1636.