The name Christiann is of German origin, derived from the Latin word 'Christianus', which means ' follower of Christ'. It is a variant spelling of the more common Christian, and it gained popularity in Germany during the Middle Ages. The name was introduced to England by way of the Normans after the Norman Conquest in 1066, but it remained relatively uncommon until the mid-20th century when it began to be used more frequently.
The name Christiann appears to have been quite popular during the mid-20th century, with a significant number of births occurring between 1948 and 1976. However, its popularity seems to have declined significantly after the 1970s, with fewer than ten births per year from 1977 onwards, excluding a peak in 1995 with eleven births. Overall, there were 308 recorded births named Christiann between 1948 and 2013.