What was his son's name? I thought Lahore was derived from La Aur.....................
Lahore was earlier known as Lavapuri after the son of Shri. Rama called "Lava or Luv".
The fort from which the name comes was called Luv-awar or the "Fort of Luv" which later became Lahore.
The kingdom of Shri. Rama was split between his two sons Lava/Luv and Kusha/kush.
Lava established his capital in Lahore and Kusha established his capital in Kushavati in UP.