_David Dolben_ was born at Segrwyd, near Denbigh, in 1581. He was educated at St. John’s College, Cambridge, where he proceeded regularly through his degrees to that of doctor. He became a prebendary of St. Asaph, and vicar of Hackney, in Middlesex; and in 1631 he was raised to the bishopric of Bangor. He died two years after his promotion, in London, and was buried in Hackney church. _William Edwards_, one of the most wonderful examples of self-taught genius, was a native of Glamorganshire, where he was born at Eglwysilan, in 1719. At an early age he attracted notice by the neatness of his workmanship, in building walls on his father’s farm; and gradually he arrived at the building of houses and larger structures. Having given great satisfaction to all his employers, he undertook, in 1746, to build a bridge over the river Tav, which was executed and greatly admired; at the end of two years and a half it was destroyed by a tremendous flood, which carried it away: he immediately commenced a new one, which however was likewise a failure. The third was completed in 1755, and remains a splendid monument of his talent, and is one of the most beautiful in the world; its span is 140 feet; and it exceeds the famed Rialto of Venice, which was supposed to be the largest arch in the world, by 42 feet. He devised several important improvements in the art of bridge building, and the success of his last bridge over the Tav introduced him to public notice; and he was employed to build numerous other bridges in South Wales. He died in 1789. It is rather singular that his son and grandson were equally possessed of the same taste and architectural talent.