Definition of "independency"

All young creatures, thought I, more or less, covet independency […].

1748, [Samuel Richardson], “Letter XIX”, in Clarissa. Or, The History of a Young Lady: […], volumes (please specify |volume=I to VII), London: […] S[amuel] Richardson; […]

A printed copy of this Declaration of Independency came accidentally to our hands a few days after the dispatch of the Mercury packet, and we have the honor to enclose it.

1776 August 11, William Howe and Richard Howe, letter sent from North America to Europe with a copy of the United States Declaration of Independence

I found myself in possession of a small independency

1860, William Makepeace Thackeray, chapter 1, in Lovel, the Widower