Janssen name origins
The Netherlands (Friesland) and Germany (Ostfriesland).
The Friesian language is a combination German and Dutch.
Jan is a Dutch name. Ja: The naming based on Deities.
Jans Arms:
11th century Prussia. Schleswig-Holstein, Germany
A silver shield with 2 red bars.
Other Janssen arms. Name research and histories of Janssen/Verheul families.
Dutch emigration
Refugees fleeing the Spanish Inquisition, in 1567 England.
By the end of the 17th century, roughly 200,000 Huguenots had been driven from France during a series of religious persecutions. Assimilation altered their names.

Gerard Johnson/Janssen Frederick Calvert, son of: Cornelius Janssen; artist
Dutch refugee in 1567 England. Charles Calvert and Mary Janssen. Flemish exiles in pre 1590 England.
Post WW2 migration dealt with overcrowding and the need for labourers.
The Dutch relocated in England, Switzerland, Holland, Belgium, Germany, Northern Europe, South Africa, North America, Australia and New Zealand.
©2010-2011 theojanssen.ca