There are different takes as to where and how the name Pasco originated. As a given name it is believed to be the Cornish version of the name Pascal. The name Pascal is supposed to mean "Easter Child". It is believed to be of Latin origin and a name reserved for children of the male sex. It is alternately believed that the name could have been an abbreviation of the "Pacific Steamship Company", however this seems to be how certain places derived this name. As a family name the name Pasco is believed to be Italian and derived from the Italian word "pasqua". The name "Pasqua" like the name "Pascal" has the same meaning of "Easter". It is assumed that it was originally used as a nickname for a person born on Easter day.
