Columbia subject headings:
Brazil--History--Empire, 1822-1889.
Pedro I, Emperor of Brazil, 1798-1834.
Santos, Domitila de Castro Canto e Melo, Marquesa de, 1797-1867.
Harvard subject headings:
Brazil--Kings and rulers--Biography.
Pedro I, Emperor of Brazil, 1798-1834--Relations with women.
Santos, Domitila de Castro Canto e Melo, Marquesa de, 1797-1867.
Princeton subject headings: