Philip I, Count of Nassau-Wiesbaden-Idstein

Philip I, Count of Nassau-Wiesbaden-Idstein (1490 in Cologne – 16 June 1558) was member of the House of Nassau who ruled the County of Nassau-Wiesbaden-Idstein.

Early life
He was born as the only son of Count Adolph III and his wife, Countess Margaret of Hanau-Lichtenberg. After his father died in 1511, he became the ruler in his own right.

Marriage and issue
In 1514, he married Adriana of Glymes, the daughter of John III of Bergen op Zoom. They had five children:
 * Catherine (1515–1540), married in 1538 to John II of Hohenfels
 * Philip II (1516–1566)
 * Margaret (1517–1596)
 * Adolph (1518–1556), married in 1543 to Countess Françoise of Luxembourg, the daughter of Charles I, Count of Ligny
 * Balthasar (1520–1568)