In 1849, Rossiter was elected to the National Academy. In 1851, he married Anna Ehrick Parmly. They toured Europe in 1853, settling in Paris where Anna gave birth to twins Ehrick Kensett and Charlotte. Rossiter kept a studio in Paris from 1853 to 1856, winning a gold medal at the Universal Exposition of 1855 for his "Venice in the Fifteenth Century". Anna died shortly after the birth of their daughter Anna, and the family moved back to New York. For a brief period of time Rossiter had an art gallery, exhibiting his work and the work of his friends.