Think of the implication: the only descendant you've met is Charles Darnay.
The only descendants to still carry the Newman name today are the Webster Family.
Feanor's only descendants were his seven sons, six of whom reached Beleriand.
What does that say for verisimilitude in the animated film, which is the only direct descendant of the late Novel as narrative.
Karl's only descendants were from his illegitimate line.
Since birth he had been taught that the Trackers were the only true descendants of those who lived before the Holocaust.
It is believed to be the only surviving descendant of a Sarmatian language.
The will hints at the tense relationship between her and her only descendants.
A man does not wed the only Living descendant of the last emperor merely for love!
Melanesians may not be the only modern-day descendants of Denisovans.