A friend of Henry's and a representative of the affluent social circles in which he moves, known for her active social life and occasional snobbery.

Henry's brother, portrayed as a decisive and ambitious figure with a strong sense of direction, who maintains a complex relationship with Henry throughout their lives.

Henry's younger sister, who struggles with mental illness and serves as an inspiration for some of Henry's fictional characters.

A mild-mannered former soldier working as a servant in Lady Wolseley's household, who shares an ambiguous attraction with Henry.

A flamboyant playwright and Henry's contemporary, providing a contrast to Henry's more reserved personality and artistic approach.

An old friend of Henry's, characterized by his adventurous spirit and discretion, who shares a complicated friendship with Henry.

Henry's lively and intelligent cousin, who serves as inspiration for one of his famous literary characters.

A close friend of Henry's and a fellow intellectual, known for her artistic inclinations and struggles with depression.

A young sculptor from Newport, Rhode Island, whom Henry befriends in Rome and feels a romantic attraction toward.