 The same law also forbids the creation of a surname which is a duplicate of any existing surnames, however there are some duplicates dating to the time before computer databases were available to prevent this.Some creations incorporated the name of their location (muban, tambon, or amphoe) into their surnames, similar to family name suffixes.As a measure of the diversity of Thai names, in a sample of 45,665 names, 81% of family names were unique and 35% of given names were unique.