What happened with Walker during the two following years remains vague, but in 1878, he opened a studio in New York City. During the 1880s, Walker's parents moved to Rochester, New York, and Walker participated in the founding of the Rochester Art Club. A further sign of Walker's growing success was an invitation to join the American Watercolour membership in 1882. In 1883 he married Jeanette Pretty (died 1938) of Toronto. They had two children, Alice (1884–1891) and Horatio Jr. (1886–1910). It was sometime during this period that Walker purchased a residence on Île d'Orléans in the village of Sainte-Pétronille. From now on until his retirement, Walker would spend his summers in Quebec and winters in his New York City studio.