Primogeniture
King Duncan's eldest son, Malcolm, is supposed to inherit the throne after his father's death.
The Dauphin was the prince, the eldest son of the king. The Dauphin was the son who was to inherit the crown, and was his title before he was crowned as King.
Assuming there is no other surviving parent, it will be divided among the children and issue of any predeceased children. The eldest son does not inherit to the exclusion of the other children.
The eldest son of Kunti is King Yudhishthira.
his eldest son died in 1969
The eldest son of Cronus and Rhea is Poseidon. Zeus is the youngest.
Charlemagne was his eldest son.
Humayun was the eldest son of Emperor Babur. Babur was succeeded by Humayun in 1530.
Eldest son of Brahma who is a God is known to be Agni.
Prince Salim was the eldest son of Akbar, who succeeded him with the title Jahangir (1605-1627).
Yes. The line of descent from Elizabeth II is to her eldest son, Charles ,then to his eldest son, William and to his eldest son. If William has daughters only then the crown would pass to his eldest daughter. If he has a daughter and then a son, under present UK law the crown would pass to his son. The crown would only pass to Harry if William died childless or abdicated. If Charles abdicates the crown would pass to his brother Andrew, Duke of York and William would not inherit. If Queen Elizabeth II were to abdicate the crown would pass to Viscount Linley, eldest son of her late sister, Princess Margaret.