Wikipedia
Merneptah or Merenptah was the fourth ruler of the Nineteenth Dynasty of Ancient Egypt. He ruled Egypt for almost ten years between late July or early August 1213 and May 2, 1203 BC, according to contemporary historical records. He was the thirteenth son of Ramesses II and only came to power because all his older brothers, including his full brother Khaemwaset or Khaemwase, had died. By the time he ascended to the throne he was almost sixty years old. His throne name was Ba-en-re Mery-netjeru, which means "The Soul of Ra, Beloved of the Gods".
Merneptah was probably the fourth child of Isetnofret, the second wife of Ramesses II, and he was married to Queen Isetnofret, his royal wife, who was likely his full sister bearing the name of their mother. It is presumed that Merneptah also was married to Queen Takhat and one of their sons would become the later Nineteenth Dynasty pharaoh, Seti II. They also were the parents of prince Merenptah and possibly the usurper, Amenmesse, and Queen Twosret, wife of Seti II and later pharaoh in her own right.