‘In Memoriam’ is an elegy written by Alfred Tennyson on the death of his friend-

In Memoriam, in full In Memoriam A.H.H., poem by Alfred, Lord Tennyson, written between the years 1833 and 1850 and published anonymously in 1850.
- 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.
- In Memoriam reflects the Victorian struggle to reconcile traditional religious faith with the emerging theories of evolution and modern geology.
Source: Britannica.com