1598. Florio, Immemorabile, vnmemorable, not worth the remembrance, forgetfull.
1607. Topsell, Four-f. Beasts, 142. Such was the vnmemorable vanity of the Heathens in theyr goddes and sacrifices.
1858. Carlyle, Fredk. Gt., V. iii. I. 559. If a few things memorable are to be remembered, millions of things unmemorable must first be forgotten!
1885. Dixon, Hist. Ch. Eng., III. 229. A not unmemorable duel.
absol. 1879. F. Harrison, Choice of Bks., i. (1886), 9. The memoirs of the unmemorable, and lives of those who never really lived at all.