Johann Sebastian Bach (1685-1750) used one or more trumpets in several of his works.
His whole life, Bach had trumpet players around him. His father, Johann Ambrosius Bach was string player, town piper and court trumpeter.
His second father-in-law (the father of Anna Magdalena Wilcken) was also a court trumpeter.

The most famous player connected to Bach was the Leipzig Stadtpfeifer, Gottfried Reiche.

Resources (here):

• List of works where trumpets are used
• List of trumpet players and recordings of Cantatas
• List of trumpet players and recordings of Orchestersuites
• List of trumpet players and recordings of Brandenburg No. 2
• Brandenburg No. 2
• "Bach for Brass"
• The 6 Cellosuites (can also be played on trumpet)

Links to great J.S. Bach sites:

• Classical Midi Archives - J.S. Bach
• J.S. Bach HomePage
• Bach Digital