Lord Glenarvan owns a yacht called the
Duncan, which he uses to help find Captain Grant of the
Britannia, who is being sought by his children Robert and Mary. After many travels and misfortunes he and his crew eventually finds the captain in the conclusion of
In Search of the Castaways. In
The Mysterious Island, Lord Glenarvan uses the
Duncan to save castaways and the repentant criminal
Tom Ayrton on the fictional Lincoln Island. In
Among the Cannibals, Lord Glenarvan threatens to kill his wife to prevent her from being taken captive by a group of Maori. Moffat interprets this scene as an example of the "European fear" of "the contamination and despoliation of pure and virtuous European women". ==Reception==