The highest society then consisted, and I think always consist, of four sorts of people: rich people who are received at Court, people not wealthy but born and brought up in Court circles, rich people who ingratiate themselves into the Court set, and people neither rich nor belonging to the Court but who ingratiate themselves into the first and second sets.
-- Leo Tolstoy, translated by Louise and Aylmer Maude, Father Sergius, 1898
Cadurcis himself, good humered because he was happy, doubly exerted himself to ingratiate himself with Lady Annabel, and felt every day that he was advancing. Venetia always smiled upon him, and praised him delightfully for his delightful conduct.
-- Benjamin Disraeli, Venetia, 1871
Derived from the Latin in gratiam literally meaning "into favor," ingratiate entered English in the first half of the seventeenth century.