Definition of "infortunate"

Henry, though he be infortunate

1591 (date written), William Shakespeare, “The Second Part of Henry the Sixt, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies. […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act IV, scene ix]

That infortunate imperfit Embrion of my idle houres the Ile of Dogs before mentioned, breeding vnto me ſuch bitter throwes in the teaming as it did, and the tempeſtes that aroſe at his birth, ſo aſtoniſhing outragious and violent as if my braine had bene conceiued of another Hercules, I was ſo terrifyed with my owne encreaſe (like a woman long trauailing to bee deliuered of a monſter) that it was no ſooner borne but I was glad to run from it.

1599, [Thomas] Nashe, Nashes Lenten Stuffe, […], London: […] [Thomas Judson and Valentine Simmes] for N[icholas] L[ing] and C[uthbert] B[urby] […], page 2

a most infortunate chance

1655, James Howell, “To Simon Digby, Esq.”, in Epistolæ Ho-Elianæ. Familiar Letters Domestic and Forren. […], 3rd edition, volume (please specify the page), London: […] Humphrey Mos[e]ley, […]