Which character is a controlling figure and eventually becomes Isabel Archer's husband in "The Portrait of a Lady"?

In "The Portrait of a Lady," Gilbert Osmond embodies the role of a controlling figure who ultimately becomes Isabel Archer's husband. His character is marked by a strong desire to dominate and manipulate those around him, particularly Isabel. Osmond's artistic sensibility and sophistication initially attract Isabel, but as their relationship develops, his controlling nature becomes evident. He seeks to shape Isabel into the ideal wife according to his standards, which reveals a troubling aspect of their dynamic. This theme of control is central to the narrative, highlighting the tension between Isabel's pursuit of independence and Osmond's oppressive influence.

The other characters play different roles in Isabel's life; for instance, Lord Warburton is genuinely in love with Isabel and offers her a different kind of life, one that may promote more freedom, but he does not possess the same controlling tendencies as Osmond. Ralph Touchett serves as a supportive friend and confidant but is not a controlling figure. Caspar Goodwood represents another potential suitor for Isabel, but he is also not characterized by the same level of control that defines Osmond's actions. Understanding Osmond’s complex nature enhances the exploration of themes concerning individual freedom versus societal constraints in the novel.