a Dutch painter, sculptor, writer and teacher, involved during part of his life in revolutionary activity. He attended Cornelis Kruseman's studio together with other artists of this period, such as Alexander Hugo Bakker Korff, David Bles and Herman ten Kate. Between 1846 and 1851 Koelman lived in Rome, to where he travelled for artistic purposes, but where he found himself involved in the revolutionary Roman Republic of 1849, and eventually joined Giuseppe Garibaldi's defence of Rome against the French Army.
