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Add "-Biography" or "-Bio-bibliography" to broader subject headings like "Greek authors"

Who was who in the Greek world, 776 BC-30 BC, ed. D. Bowder. Ithaca, N.Y. : Cornell University Press, 1982.
Perkins Reference -- DF208 .W48 1982. 

Who Was Who in the Roman World, 753 BC-AD 476, ed. D. Bowder.  Ithaca, N.Y. : Cornell University Press, 1980. 
Perkins Reference -- DG203 .W46 1980. 
Biographies of eminent Greeks and Romans.

Biographical dictionary of ancient Greek and Roman women: notable women from Sappho to Helena, M. and B. Lightman,  New York : Facts On File, c2000.
Perkins Reference -- HQ1136 .L54 2000. 
Biographies of eminent ancient women.

Biography Resource Center
Coverage is international and not limited by time period.