Question: Who is the paternal grandmother of Balthasar, Count Of Nassau-Wiesbaden-Idstein?
Answer: Margaret of Hanau-Lichtenberg

Philip I, Count of Nassau-Wiesbaden-Idstein (1490 in Cologne – 16 June 1558) was the only son of Count Adolph III and his wife Margaret of Hanau-Lichtenberg. After his father died in 1511, he ruled Nassau-Wiesbaden and Nassau-Idstein. In 1514, he married Adriana of Glymes, the daughter of John III of Bergen op Zoom