Who wrote the elegy 'In Memoriam'?

Alfred Lord Tennyson (1809 - 1892): English poet often regarded as the chief representative of the Victorian age in poetry.

His Notable Works:
- The Charge of the Light Brigade,
- Crossing the Bar,
- Demeter and Other Poems,
- Enoch Arden,
- Idylls of the King,
- In Memoriam,
- Locksley Hall,
- Mariana,
- The Lotos-Eaters,
- The Princess,
- The Promise of May,
- Ulysses, etc.

'In Memoriam': Consisting of 131 sections, a prologue, and an epilogue, this chiefly elegiac work examines the different stages of Tennyson's period of mourning over the death of his close friend Arthur Henry Hallam.
[Source: Encyclopedia of Britannica.]