Surname law matronym from the name of a parent or parent-in-law; these possibilities are not necessarily open to native Icelanders. Reza Shah Pahlavi ordered Iranians to adopt Western style surnames in place of old Islamic names and titles during his reign. A law in Japan dating from 1896 requires a married couple to have a common surname. Most commonly it was the wife who took her husband's name. In 2011, this law was challenged as unconstitutional on gender equality grounds, but the Supreme Court of Japan upheld the law in 2015. Prussia tasked the implementation of surnames to E. T. A. Hoffmann.
Surname law According to the current law, Person Name Act, BE 2505 (1962), to create a new Thai name, it must not be longer than ten Thai letters, excluding vowel symbols and diacritics. The same law also forbids the creation of a surname that duplicated any existing surnames, but there are some duplicates dating to the time before computer databases were available to prevent this. Some creations added the name of their location (muban, tambon or amphoe) into surnames, similar to family name suffixes. On 21 June 1934, Turkey adopted the Surname Law which required all its citizens to adopt and use