The phrase "an elder son" is correct and usable in written English.
It can be used when referring to the oldest male child in a family, often in a context discussing family hierarchy or relationships.
Example: "In the family, the elder son was expected to take over the family business."
Alternatives: "the oldest son" or "the firstborn son".
Yglesias, like Enrique, had parents who were writers and an elder son who became a prominent political blogger.
Aswany has three children — an elder son from a first marriage and two teen-age daughters and a stepson with his second wife.
They described how Mr. Hussein's mother suffered the death of both her husband and an elder son while she was pregnant with him.
Martin gave us an elder son to avenge his father's death, Rob Stark, and then offed him, too.
An elder son finds solace with an ornately tattooed leather gang, which has a family's closeness and a steelier sense of identity than Jake's sodden crowd; a younger boy, sent to that state home, regains some sense of Maori pride when he's away from his father.
They had two sons and a daughter; the elder son, Charles, was an engineer and cowrote his father's biography.
On Monday night, Peake spent his last few hours on Earth before his six-month trip with his close family, though behind a glass screen, with his wife, Rebecca, posting a picture of their elder son wrapped in a union flag.
In 1900 his mother converted to Roman Catholicism, a faith her elder son also practiced devoutly.
His story typifies gradual upward mobility: his father was a factory worker; his elder son is studying at a university in Neza and wants to become an engineer, and his younger son is studying to be a dance teacher.
Especially the elder son, a middle-age man with a diamond earring and a habit of jerking his head as he spoke, long blond hair flying.
Legal attacks on Khaleda Zia, admittedly an unsympathetic figure, are in full flow: an anti-corruption body charged her on August 8th; the same day a court issued a warrant for her exiled elder son over bribe-taking; in June a younger son was sentenced, in absentia, to six years in another graft case; in November she was evicted from her home.
