Elegiac Poetry
Elegy:  A formal poem on the death of a particular person or on death in general.  Originally, in Greek and Latin, it was a poem on any solemn or serious subject. 
It was applied to love poems or Complaints in Elizabethan England.  A sub-genre is the Pastoral Elegy, as in Milton’s Lycidas.
AS Elegies include “The Wanderer,” “The Seafarer,” “The Ruin,” “Deor,” and “The Wife’s Lament.”
“[E]ach poem at some stage contrasts the sorrow of the present with past happiness, dwelling upon the transience of life’s pleasures and the fallaciousness of its security. . . .  [The poems] include narration in the first person, the sense of isolation of the narrator who has lost all who are dear to him, and the use of weather and ruins to reinforce the feelings of decay and transitoriness” (Grose & McKenna 93)