was he ever found?
No, he was never found, despite attempts by his family to locate him, and his whereabouts after this date remain uncertain.
George Vincent (painter)
He was never found, despite attempts by his family to locate him, and his whereabouts after this date remain uncertain. 
who was george vincent (painter) married to? Mary Elizabeth Cugnoni did he go missing at any time in his life? Yes, after 1831, Vincent disappeared
wiki:18441682
George Vincent (painter) [SEP] Introduction
After 1831, Vincent disappeared. He was never found, despite attempts by his family to locate him, and his whereabouts after this date remain uncertain. His death may have occurred before April 1832, perhaps in Bath. His picture "Greenwich Hospital from the River" was shown in London three decades after his death and caused renewed interest in his paintings and helped to establish his reputation as a leading member of the Norwich School. The art historian Herbert Minton Cundall wrote in the 1920s that had Vincent "not given way to intemperate habits he would probably have ranked amongst the foremost of British landscape painters".