Mystery Monday: A Southern Family Secret

Exploring was a trait passed with the genes
In Linus Benson's family. He, too,
Grew restless when in too-familiar scenes,
And so when he was grown, he aimed for blue
And boundless skies he'd conquer with a plane
Of his design. But on his maiden flight
Aboard the craft he'd named Untamed Elaine
(His mother), long before he came in sight
Of far Antarctica, he was pulled down
By forces quite unknown. Soon did he find
That he not alone. The island, crowned
By a volcano's dormant cone, did bind
His wild imagination, for the shape
Of his own mother, stone-carved, made him gape.