He was later at the Enclave meeting to discuss the incidents that had happened around the city. While waiting for the Consul to arrive, he amused himself by tossing shiny, valuable, breakable objects near the fountain in the Sanctuary.
He was then brought to his cousin James's engagement party. He was left with his cousin Thomas while his parents helped set up. When Thomas tried to pawn him off on Lucie, he began demanding Matthew and Oscar.
- According to a found family tree, Alexander died in 1971 at the age of 70 or 71.
- One of his brother Christopher's descendants, Alec Lightwood, shares the same name as him.