Etymology and meaning of HALLAM

Published Information
From Hall, Welsh, salt, and ham, a house or village, from its manufacture in that place, or being situated near the salt water. It may be derived from Hal or Hayle, a moor, and ham,--the house on the moor. Halham, the house on the hill, from Hal, Cornish British, a hill.

Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import (1857).