Campaspe

1. A supposed concubine of Alexander the Great.
2. A rural locality in Charters Towers Region, Queensland, Australia.
3. A river in northern Queensland, which joins the Cape River at Campaspe.
4. A river in Victoria, Australia, which flows north to join the Murray.
5. A local government area in northern Victoria, named after the river; in full, the Shire of Campaspe.

plural Campaspes

1. archaicpoeticA man's mistress.

   John Lyly Cupid and my Campaspe play'd / At cards for kisses—Cupid paid: […]

   1 more example

   But there may be Campaspes in our train.

   1836, David Paul Brown, The Prophet of St. Paul's: A Play, in Five Acts, page 23