I wasn’t able to combine "God-given thunderous owl " into a single, bona-fide, non-pythonesque Greek name. My suggestions:Dorothea
Brontoglauke (pronounced "vrontoGLAPHkey") is a grammatically kosher combination of Bronte
and Glaux . If you have a favorite deity other than the generic theo- , we could come up with an even more interesting first name.
By the way, an ancient proverb that has survived to this day is "Glauk' athenaze", i.e., to "carry owls to Athens". The expression is similar to the British "carry coals to Newcastle".