The story of Tennyson's reaction to Arthur Hallam's death is so familiar that we need to remind ourselves how very little connected, factual knowledge we have of his life at that crucial time. Our vivid impressions of him, sunk for long months in dark grief, isolated and immobile at Somersby, derive, if the truth be told, from little more than In Memoriam as reinforced, until recently, only by two blanket statements and a few contemporary letters set in the loose and chronologically vague narrative of Hallam Tennyson's Memoir. Sir Charles Tennyson's lucid biography, of course, has now greatly integrated and sharpened the Memoir account, and expanded it with new material from the papers of the Tennyson d'Eyncourt family. But since the d'Eyncourts had little direct contact with their Somersby cousins during the period in question, and make no mention at all of Alfred, we are still left with less specific knowledge than we might wish. Fortunately, a welcome quirk of literary fate has preserved an unused contemporary source of information: the diary for the years 1833–35 of Tennyson's friend, the Rev. John Rashdall, M.A., now accessible in the Bodleian Library. In what follows I propose to use this diary together with other contemporary material, published and unpublished, to construct a fuller, more detailed account than has yet been available of Tennyson in the year of Hallam's death.