Definition of "unblessedly"

Attempts were made—not unblessedly, we hope—to ease the few remaining days of this man of letters, who had done the double toils of schoolmaster and of author, and thus to cast a gleam of sunshine over the last days of the old man.

1864, The British Controversialist and Literary Magazine, Houlston and Stonemen, page 145

I think that the operation of paper money, and the practice of privateering, have produced a gradual decay of morals; introduced pride, ambition, envy, lust of power; produced a decay of patriotism, and the love of commutative justice; and I am apprehensive these are the invariable concommitants of the luxury, in which we are unblessedly involved, almost to our total destruction.

1881, The Debates in the Several State Conventions on the Adoption of the Federal Constitution, as Recommended by the General Convention at Philadelphia in 1787‎, Lippincott, page 31

Nothing was thereby altered or improved in the desperate case of the brother-sister pair, but to the unblessedly blest maiden it seemed even so that by the mere sending of the squire a way out of their misery was already found; […]

1951, Thomas Mann, “The Sieur Eisengrein”, in H[elen] T[racy] Lowe-Porter, transl., The Holy Sinner, New York, N.Y.: Alfred A. Knopf, pages 48–49