|Full name:||Gideon Arthur Lightwood|
|Residence:||The London Institute|
|Significant Other/s:||Sophie Collins (wife)|
|Children:|| Barbara Lightwood |
|Sibling/s:|| Gabriel Lightwood |
|Hair color:||Sandy blond|
|First appearance:||Clockwork Prince|
|Latest appearance:||Clockwork Princess|
|Mentioned in:||Clockwork Angel|
Gideon Lightwood is the eldest child of Benedict Lightwood and Barbara Pangborn. He is nineteen in Clockwork Angel and is first met in Clockwork Prince. It is revealed that he was away learning about other Shadowhunter cultures from other Institutes. He is currently in love with Sophie Collins and lives in the Institute after breaking his ties with his father.
Gideon Arthur Lightwood was born the eldest of three children, the others being Gabriel Lightwood and Tatiana Lightwood. As a child, he displayed the typical Lightwood attitude of snobbishness. His mother died when he was young. He grew up believing that all Shadowhunters were stuck up and pompous. However, despite never having a chance to truly know her, his father's story of his mother's death never made sense to him.
Gideon was about fourteen when he met Will Herondale. They were at the London Enclave Christmas party. His sister was hopelessly infatuated with Will. Will read Tatiana's diary in front of the entire Enclave, and Tatiana ran out crying. Since then, Gideon developed a deep loathing for Will. In Clockwork Prince, his hatred lessens.
When Gideon turned eighteen, he completed his Shadowhunter training. Therefore, as was customary, he left to travel to the Madrid Institute. He was shocked to realize that all Shadowhunters weren't as pompous as his father. Therefore, he began to mature and began to act more modestly.
The Infernal Devices
Prior to the beginning of the book, Gideon was called back from Madrid by his father. He was told that he was needed at home, and that he must return immediately. Therefore, despite his wish to stay away, he embarked on the journey home. He only did so in hopes of helping his brother, Gabriel.
He and Sophie began to meet when Sophie wasn't working. Sophie began to greatly love him, and he her. When the Shadowhunters of the London Institute needed someone to watch the Institute while they were out, Sophie recommended Gideon. He then became the one that they often called when needing someone to watch the Institute.
Gideon attended a party that his father held. He was disgusted to discover that his father was fratenizing with demons, an act which is illegal in Shadowhunter culture.
When the members of the Institute came to blackmail his father, Gideon sided with them in the confrontation. He feared the future of the Enclave, the London Shadowhunter force, if his father became head of the Institute. Then, he left with the Institute Shadowhunters, deciding to take up residence at the Institute.
He sat with the Institute Shadowhunters at the Counil meeting.
He is still in love with Sophie, and thus hid the scones that Sophie had to carry around, under his bed, this makes Sophie angry because he was making her overwork. However, Gideon later proposes marriage to Sophie, and she agrees.
In Cadair Idris, he fought alongside Gabriel, and returned alive.
He is said to have died a few years before Will in the Epilogue of the book.
Gideon is described as very attractive. He was very muscular and had thick, sandy-blond hair. He also had a similar face as his brother, and they shared the same lumious green eyes.
Gideon is exceptionally different from the rest of his family. He is quiet in nature, mature, and kind-hearted. He is known to be a fairly good teacher to Sophie and he is far less rash than his brother. He is shown to care very deeply for his brother, returning to London, though he hated his father's home, just to help his brother.