A character who exists largely in memories as an influential figure in Godfrey St. Peter's life. Described with admirable qualities, Tom's presence looms over the other characters.

St. Peter's wife, who shares a complicated and evolving relationship with her husband. Her worldly nature is contrasted by St. Peter’s introspective personality.

An engineer married to St. Peter's elder daughter Rosamond, known for his wealth and generosity. He champions Tom Outland posthumously, aiming to gain acceptance in his new family.

St. Peter’s elder daughter, previously engaged to Tom Outland. Married to Louie Marsellus, she has embraced a life of wealth and luxury that brings tension within the family.

Kathleen St. Peter’s husband, who maintains a friendly relationship with his father-in-law and shares interests with him. His career as a writer connects him closely with Kathleen and St. Peter.

The younger daughter of St. Peter, who remains close to her father. She shares a mutual appreciation and memory of Tom Outland with her father.

The St. Peters' housekeeper, who has a history of friendship and cooperation with Godfrey St. Peter. She shares space in the attic room and proves crucial in key moments.