Frederick I, Count Palatine of Simmern

Frederick I, the Hunsrücker (German: Friedrich I.; 19 November 1417 – 29 November 1480) was the Count Palatine of Simmern from 1459 until 1480.
Frederick was born in 1417 to Stephen, Count Palatine of Simmern and Zweibrücken and his wife, Anna of Veldenz. In 1444 his father partitioned his territories between Frederick and his younger brother Louis. Frederick married Margaret of Guelders, daughter of Duke Arnold, on 16 August 1454. Frederick died in Simmern in 1480 and was buried in the Augustinian Abbey of Ravengiersburg.

With Margaret (1436 – 15 August 1486), daughter of Arnold, Duke of Guelders:

1. Katherine (1455 – 28 December 1522)
2. Stephen (25 February 1457 – 1488/9)
3. William (2 January 1458 – 1458)
4. John I (15 May 1459 – 27 January 1509)
5. Frederick (10 April 1460 – 22 November 1518)
6. Rupert (16 October 1461 – 19 April 1507)
7. Anne (30 July 1465 – 15 July 1517)
8. Margaret (2 December 1466 – August 1506)
9. Helene (1467 – 21 February 1555)
10. William (20 April 1468 – 1481)