Translation of "Eldest" in Spanish

He is the eldest.

Él es el mayor.

I really love your eldest sister.

Amo de verdad a su hermana mayor.

What's the name of your eldest brother?

¿Cuál es el nombre de su hermano mayor?

Caution is the eldest daughter of wisdom.

La prudencia es la hija mayor de la sabiduría.

It's not easy being the eldest child.

No es fácil ser el hijo mayor.

The eldest son succeeded to all the property.

El primogénito heredó toda la propiedad.

Fatima is the eldest student in our class.

Fátima es la estudiante de mayor edad en nuestro curso.

His elder sister is older than my eldest brother.

Su hermana mayor es más grande que mi hermano mayor.

The king's eldest son is the heir to the throne.

El primogénito del rey es el heredero del trono.

Suddenly the eldest daughter spoke up, saying, "I want candy."

Repentinamente, la primogénita se dijo: "quiero las chucherías."

- He is the eldest.
- Heʼs the oldest.
- He is the oldest.

Él es el mayor.

His health was failing, and in 1821, the death  of his eldest daughter left him grief-stricken.

His health was failing, and in 1821, the death of his eldest daughter left him grief-stricken.

- His elder sister is older than my eldest brother.
- His older sister is older than my oldest brother.

Su hermana mayor es mayor que mi hermano mayor.

My father was the ultimate authority of that family in which power was hierarchically passed down to the eldest brothers.

Mi padre era la autoridad suprema de esa familia en la que el poder descendía jerárquicamente hacia los hermanos mayores.