William Beveridge (1637 – 5 March 1708) was an English writer and clergyman who served as Bishop of St Asaph from 1704 until his death.

[1] He was first taught by his learned father and for two years was sent to Oakham School, Rutland, where William Cave was his schoolfellow.

Dr. Anthony Tuckney was then head of the college and took a special interest in young Beveridge.

During his lifetime Beveridge refused to sit for his portrait,[6] but following his death Benjamin Ferrers, a relative, painted one, now in the Bodleian Library, Oxford, from his corpse.

[7] In his day he was styled "the great reviver and restorer of primitive piety" because in his sermons and other writings, he dwelt on the Church of the early centuries.

They contain six volumes of sermons, and in addition: His Institutionum chronotogicarum libri duo, una cum totidem arithmetices chronologicæ libellis (London, 1669) was once an admired treatise on chronology.

In it, he also includes a full explanation of the Chinese remainder theorem for the case in which the moduli are relatively prime.