Isabel Godin set off from Riobamba on October 1, 1769. She followed the Chambo River out of the Andes to Canelos, and from there traveled down the Bobonaza River. Her goal was to reach Tabatinga, where a galliot was waiting to take her to her husband, Jean, in French Guiana. (See map below.) To research The Mapmaker's Wife, Robert Whitaker retraced her steps, leaving from Cajabamba--which was the site of colonial Riobamba--on October 1, 2002.