The name Kate ranked 195th in popularity for females of all ages in a sample of 2000-2003 Social Security Administration statistics and 464th in popularity for females of all ages in a sample of the 1990 US Census.
This name is highly rated in the 1990 U.S. Census popularity survey of all ages, but after 1960 does not appear in the state data listing the most popular baby names.
This meaning assumes the source name was derived from the Greek term katharos. However, it may have evolved from Hecate, the name of the Greek goddess of magic. Another possible source is katateinô, the Greek word for torture.
All three meanings might have been associated with St. Aikaterine (Katherine) of Alexandria, who was born a pagan but died as a Christian martyr.