Definition of "squirearchy"

Now, as one of the squirearchy, greeted with honorable salutations by the villagers, he marched into his office, and peace and dignity were upon him, and the morning's dissonances all unheard.

1922, Sinclair Lewis, chapter 3, in Babbitt

We may characterise medieval village government not unfairly as squirearchy, though often a benevolent squirearchy enough, just as the squirearchy of the eighteenth century was often benevolent also.

1930 [Cambridge University Press], G. G. Coulton, The Medieval Scene: An Informal Introduction to the Middle Ages, 2000, Dover, page 37

For many years a combination of rural squirearchies and business interests held tight control of most state capitols.

1972, James A. Burkhart, Samuel Krislov, Raymond Lawrence Lee, American Government: the Clash of Issues, Prentice-Hall, page 92