Jón is Margrét's husband, Lauga and Steina's father, a District officer in his region of Iceland, and the tenant of Kornsá. Jón accepts Agnes into his household on Blöndal's request, feeling it is his duty to do so as a District Officer. Jón generally does not speak to Agnes, but he is often called to Blöndal's farm to make decisions regarding her case.