From Halopedia, the Halo wiki
Ellam is a refugee of the Human-Covenant War who helped found Sandholm after the ship he and others were on managed to just barely make it to Carrow in 2553. His home is the closest one to that lived in by Dahlia and her parents. It is a rounded, yurtlike concrete structure. In July of 2558 a viral infection tore through the village, rendering many immobile and killing some. When Dahlia knocked on Ellam's locked door, there was no response.
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