Sonatorrek ("the irreparable loss of sons") is a skaldic poem in 25 stanzas, that appears in Egil's Saga (written c.a. 1220–1240), an Icelandic saga focusing on the life of skald and viking, Egill Skallagrímsson (ca. 910–990). The work laments the death of two of the poet's sons, Gunnar, who died of a fever, and Böðvarr, who drowned during a storm. According to the saga, after Egill placed Böðvarr in the family burial mound, he locked himself in his bed-chamber, determined to starve himself to death. Egill’s daughter, Thorgerdur, diverted him from this plan in part by convincing him to compose a memorial poem for Böðvarr, to be carved on a rune-staff.