or the mother's surname is permitted. Finland liberalised their name law in 2017, allowing double surnames in some cases, either hyphenated or as such. A double name can be formed when marrying or getting children, combining the surnames of the spouses or the parents, respectively. Double names can be combined by taking one part of each. Either spouse or both can take a double name. Based on a family's foreign name tradition, children can get surnames also based on a grandparent's surname. The former law, from 1985, allowed either taking their spouse's surname and optionally continuing using their own surname as a hyphen-joined prefix, but formally they did not get a double surname and their children got the spouse's surname. With the rise of same-sex marriage, many same-sex couples have hyphenated each other's names upon marriage. For instance, American attorney and former chair of the Libertarian National Committee Joe Bishop-Henchman changed his surname from Henchman upon marriage to his husband Ethan Bishop, who also changed his surname to Bishop-Henchman at that time. Non-Western surname traditions Most Chinese surnames are a single character. However, in modern times, some families are now combining the surnames of the parents to create new names. Some examples of notable double-barrelled surnames include the Changchien clan in Taiwan. This practice is different from having a Chinese compound surname, where more than one character is used in a surname. In 2007, PRC officials suggested that parents should be encouraged to create two-syllable (two-character) surnames for their children by combining their parents' (one-syllable) surnames; this could make people's names more unique, and "could help solve the problem of widely recurring names". In India, double surnames are comparatively common, especially in Bengal, examples including Roy Chaudhury (sometimes written as Chowdhury), Ghosh Dastidar and Das Gupta. In recent years, a few notable married women have been keeping their original/birth surnames resulting in a double-barrelled name such as Arati Ankalikar-Tikekar, Padmaja Phenany Joglekar. In Nigeria, a double barrelled surname is adopted when an aristocratic woman marries a lower ranked man. It also occurs when a ruling family adopts the forename of their patriarch as part of their surname to distinguish themselves from others that might share their surname. An example of the former is that of the Vaughan-Richards family, a branch of the family of the Nigerian royal-turned-American emancipated slave Prince Scipio Vaughan, who maintain their mother's last name as well