In 1917, Kenyatta moved to Narok, where he was involved in transporting livestock to Nairobi, before relocating to Nairobi to work in a store selling farming and engineering equipment. In the evenings, he took classes in a church mission school. Several months later he returned to Thika before obtaining employment building houses for the Thogota Mission. He also lived for a time in Dagoretti, where he became a retainer for a local sub-chief, Kioi; in 1919 he assisted Kioi in putting the latter's case in a land dispute before a Nairobi court. Desiring a wife, Kenyatta entered a relationship with Grace Wahu, who had attended the CMS School in Kabete; she initially moved into Kenyatta's family homestead, although she joined Kenyatta in Dagoretti when Ngengi drove her out. On 20 November 1920 she gave birth to Kenyatta's son, Peter Muigui. In October 1920, Kenyatta was called before the Thogota Kirk Session and suspended from taking Holy Communion; the suspension was in response to his drinking and his relations with Wahu out of wedlock. The church insisted that a traditional Kikuyu wedding would be inadequate, and that he must undergo a Christian marriage; this took place on 8 November 1922. Kenyatta had initially refused to cease drinking, but in July 1923 officially renounced alcohol and was allowed to return to Holy Communion.