"F. Newman's book I saw yestern at our ouse," Arnold writes to Clough. "He seems to have written himself down an hass.1949, Lionel Trilling, Matthew Arnold, Taylor & Francis, →ISBN, page 169:
yestern
noun
Etymology Perhaps from yester + -en. Compare also Old English ġiestran (“yesterday”).
Yestern was the day of hail, […]1839, Johann Christoph Friedrich von Schiller, “Knight Toggenburg”, in Montagu Montagu, editor, The Song of the Bell, and other Poems, Digitized edition, published 2006, page 85:
Yestern, who was there could compete with me in strength?1840, Amelia Lane, The Fortress: An Historical Tale of the Fifteenth Century, Digitized edition, published 2012, page 305:
2 more examples
For this day ought to promise not so much mulch as yesterday or all the other yesterns all back in a row of boredowndom.1977, Bill Reed, Dogod, Digitized edition, published 2009, →ISBN, page 76:
Jestern, was Joyce's yestern.2011, Glenn P. Wolfe, Mneme's Place: Book One (fiction), iUniverse, →ISBN, page 22: