Definition of "ignoble"

I was not ignoble of descent.

c. 1591–1592 (date written), William Shakespeare, “The Third 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 i]

A base, ignoble mind, / That mounts no higher than a bird can soar.

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 II, scene i]

far from the madding crowd's ignoble strife

1750 June 12 (date written; published 1751), T[homas] Gray, “Elegy Written in a Country Churchyard”, in Designs by Mr. R[ichard] Bentley, for Six Poems by Mr. T. Gray, London: […] R[obert] Dodsley, […], published 1753