A gadfly sent by Zeus caused him to plummet to earth when he tried to ascend Mount Olympus.  
The Iliad describes how this man's daughter Laoamia "was slain by the golden-rein'd Artemis wrathful." He was once tasked with defeating the Solymi.  He completed one objective after his prey left the Hippocrene spring and spent a night in the Temple of Athena, where he found a golden bridle.  One creature killed by this man died after it breathed (*) fire onto the lead-tipped spear this man had forced down its throat.  After this father of Hippolchus and grandfather of Glaucon was accused of raping the wife of King Proetus, he was sent to the court of King Iobates to be killed. A gadfly sent by Zeus caused him to plummet to earth when he tried to ascend Mount Olympus.  For 10 points, name this Greek hero who tamed Pegasus and defeated the Chimera.
The Iliad describes how this man's daughter Laoamia "was slain by the golden-rein'd Artemis wrathful."
Bellerophon [or Bellerophontes]