Old Mr. Darcy, who was probably never referred to as such when he was alive, is Fitzwilliam Darcy’s father and godfather of George Wickham.
Given Name: Unknown, but quite possibly George as he was George Wickham’s godfather and it wasn’t uncommon for children to be named after their godparents. The fact that his daughter was called Georgiana also supports this theory.
Age: Deceased, as of approximately 5 years before the events in the novel. If he were still alive he would be at least old enough to have a son in his late 20s.
Spouse: Lady Anne Fitzwilliam
Children: Fitzwilliam and Georgiana
Personality Characteristics: George Wickham describes old Mr. Darcy as “one of the best men that ever breathed, and the truest friend I ever had.” In his famous letter to Elizabeth, Darcy uses the adjectives “excellent” and “revered” to describe his father and later says his father was “all that was benevolant and amiable.” At Christmas, Mrs. Gardiner is revealed to have known old Mr. Darcy by character and praises him to Wickham; later at Pemberley, when Mrs. Gardiner observes that Mr. Darcy was an excellent man, Mrs. Reynolds agrees giving her opinion that Fitzwilliam Darcy will be “just as affable to the poor.”
In spite of all this praise, we also know that there was some mismanagement in the parenting provided to Wickham and Darcy. Darcy himself admits that while his parents taught him correct principles, they left him to follow them in “pride and self-conceit” while spoiling him and allowing, encouraging and almost teaching him to be “selfish and overbearing” and “to think meanly of the rest of the world.”