He was the second ruling Count of Saarbrücken (de), in office 1135 - 1183.
Simon was a son of Frederick, Count of Saarbrücken (d. 1135) and his wife Gisela of Lorraine (b.c.
His younger brother Adalbert II became Archbishop of Mainz in 1138.
His eldest son, Simon II inherited a smaller County of Saarbrücken; his younger son Henry I founded the new County of Zweibrücken.
Simon was married to a Mathilda, probably a daughter of Count Meginhard I of Sponheim.