The Polish Caspar surname is of patronymic origin. It is a surname that formed from the first name of the father of the original bearer of the name. The Christian name Kaspar is of Old Germanic origin, acquiring from the Persian word for Treasurer." More common variations are: Caspari, Caspary, Caspare, Casapar, Casparo, Cuaspar, Caspara, Caspair, Caspaur, Casparie.
The surname Caspar first found in Polesie, the largest county of Poland. It inhabited by Ruthenians, called Polesians, of Ukrainian descent. The main towns are those of Brest Litovsk, Pinsk, Kobryn, Kamenets, Litovsk, and Luninets.
Some of the people with the name Caspar who arrived in the United States in the 17th century included Hans Caspar, who arrived in Carolina in 1734. John Peter Caspar, aged 16, who arrived in Pennsylvania in 1740. Some of the people with the surname Caspar who arrived in the United States in the 19th century included Philipp Caspar, who landed in Brazil in 1823. Ohann Caspar, who landed in America in 1841. John Caspar, aged 45, who landed in Missouri in 1842. Mrs. Caspar, who arrived in San Francisco, California in 1851. Georg Caspar, who came to Texas in 1854. Some of the individuals with the surname Caspar who came in the Canada in the 19th century included Franz Caspar, who landed in Quebec in 1850. Some of the population with the surname Caspar who arrived in New Zealand in the 19th century included Richard Caspar, aged 37, a farm laborer, who arrived in New Plymouth aboard the ship "Halcione" in 1875.