There can be various situations in life when it is absolutely necessary to find out the maiden name of the mother of a person or a woman who is married. How to proceed in this case?
Ask the person's relatives if you know them well. If a woman has brothers or unmarried sisters, you can directly ask her what their last name is, without immediately arousing special suspicion.
If you know the address of this woman, and also that she did not change it after marriage, find out the last name in the telephone directory or databases that were published during her girlhood. You can also use the new directories if you are sure that the number is registered to her parents.
Refer to one of the sites that have information about the former and current surnames of citizens. For example, on www.vgd.ru. If there is no information about this person on the site yet, you can order the corresponding certificate (for a fee) only if you have at least some coordinates of this girl
Go to one of the social networks on the page of this person. It is possible that among his friends there will be those who know his maiden name or the name of his mother.
Ask for this woman's marriage certificate for some purpose. Better to keep the goals clear and simple. Introduce yourself, for example, as an employee of the housing office or as a courier from the tax service. Even citizens who actually work in such positions do not always require a certificate, especially since they are not always issued by such institutions. This method will work only if you know the address of this person, but you are not familiar with him, and are not going to get acquainted in the future.
Contact a private detective agency with a request. But be prepared for the fact that there are still principled detectives in our country who care about the confidentiality of personal information. A cold welcome can also await you at the passport officer, registry office employees and other official institutions.