The social movement literature lacks a historically sensitive analysis of pathways to founding and leading a movement organization. I connect biography and history to explain the timing and form of organizational emergence. I show how Robert Welch’s founding of the conspiratorial John Birch Society was pre-dated by moral shocks, a supportive culture and social network, experience organizing people in committees, as well as some dumb luck (in the form of fortuitous timing), all of which grew his reputation in the latent conservative movement. A national reputation allowed him to gather resources and unite regionally dispersed radical rightists into a coherent national organization.