The trumpeter of Krakow : $b A tale of the fifteenth century

"The Trumpeter of Krakow" by Eric P. Kelly is a young adult historical novel published in 1928. When the Charnetski family flees their burning Ukrainian village with a legendary crystal, they seek refuge in fifteenth-century Kraków. But a ruthless mercenary pursues them relentlessly, determined to seize the mysterious gem that has sparked wars for centuries. As Joseph's father becomes the church's night trumpeter, danger closes in from all sides—including an alchemist obsessed with the crystal's power. Can they protect their ancient trust before it falls into the wrong hands? (This is an automatically generated summary.)