Columbia subject headings:
Chaucer, Geoffrey, -1400.
Poets, English--Middle English, 1100-1500--Biography.
Harvard subject headings:
Chaucer, Geoffrey, -1400
Poets, English--Middle English, 1100-1500--Biography
Princeton subject headings:
Chaucer, Geoffrey, -1400.
Great Britain--History--14th century.
Poets, English--Middle English, 1100-1500--Biography.