Materials for the History of Thomas Becket, Archbishop of Canterbury (canonized by Pope Alexander III, A.D. 1173) (Benedict of Peterborough, John of Salisbury, Alan of Tewkesbury, Edward Grim).

A scholar of Trinity College, Cambridge, who became canon of Canterbury in 1859, James Craigie Robertson (1813–82) edited for the Rolls Series this seven-volume work, published between 1875 and 1885. Superseding the earlier work of J. A. Giles, it is a collection of contemporary Latin lives and letters relating to the life of Thomas Becket (c.1120–70). Rising through the ranks to become royal chancellor and then archbishop of Canterbury, Becket fell dramatically out of favour with Henry II and, on his return from exile, was famously murdered in the cathedral church at Canterbury. Following his canonisation in 1173, his reputation grew considerably throughout western Christendom. Compiled by his contemporaries and friends, the material affords fascinating insight into the history of the archbishop, saint and martyr.