Jan Antonin Losy, earl of Losimthal (1650 Steken, South Bohemia - 1721 Prague)

Czech baroque lute player and composer. His ancestors came from Switzerland to Prague, gained a lot of money and influence at the court; amongst other things, they built a palace in early Baroque style in Pragu, Hybernska street, today known as Lidovy dum (currentl headquarters of Czech Social Democratic Party). They also rebuilt the castle at Steken, South Bohemia, where J.A. Losy was born. He graduted in philosophy at Charles University, Prague. Later he served at the court of the Austrian Emperor in various high positions. He travelled a lot (Germany, Italy, France); in his palace in Prague he held instrumental concerts playing music of J.B. Lully, J.J.Fux and others. As the lute player, he propagated so-called french style. He composed mainly simple polyphony dance suites.

Sources:

Wikipedia
Mala encyklopedie hudby (dr. Jar. Smolka; &kolektiv, Supraphon 1983)

Sample (MP3): Partita A moll