Definition of "lorn"

I loue thilke laſſe, (alas why do I loue:) / And am forlorne, (alas why am I lorne:) / Shee deignes not my good will, but doth reproue, / And of my rurall muſick holdeth ſcorne.

1579, Immeritô [pseudonym; Edmund Spenser], “Ianuarie. Aegloga Prima.”, in The Shepheardes Calender: […], London: […] Hugh Singleton, […]; republished as The Shepheardes Calender […], London: […] Iohn Wolfe for Iohn Harrison the yonger, […], 1586, folio 2, recto

Yet, trust me, Memory's warmest sighs / Are often breathed in moments lorn— / And many a feeling thought will rise / And in the bosom die unborn.

1857, Gerald Griffin, “Addressed to a Friend”, in The Poetical and Dramatic Works of Gerald Griffin, Duffy: James Duffy 7 Wellington Quay, stanza VII, page 159

The mighty river flowing dark and deep, / With ebb and flood from the remote sea-tides / Vague-sounding through the City's sleepless sleep, / Is named the River of the Suicides; / For night by night some lorn wretch overweary, / And shuddering from the future yet more dreary, / Within its cold secure oblivion hides.

1870–1874, James Thomson, “The City of Dreadful Night”, in The City of Dreadful Night and Other Poems, London: Reeves and Turner, […], published 1880, part XIX, stanza 1, pages 47–48

He never found his beloved machine gun. Lorn and drained-nervous, he was fired next day.

1963, Thomas Pynchon, “In which Benny Profane, a Schlemihl and Human Yo-yo, Gets to an Apocheir”, in V.: A Novel, New York, N.Y.: J. B. Lippincott & Co.; republished New York, N.Y.: Bantam Books, 1964 March, page 19