Ivanov died at the age of 86 in 2007. He still has a wife, a marriage with which he registered in 1957, three children and four grandchildren.
After his death, Sidorova showed up and stated that they married Ivanov in a church ceremony in Lithuania in 1943. Subsequently, even before the end of World War II, they lost contact and did not see each other again. All these years, she was looking for her husband, and she managed to find out about his whereabouts only in 2007, shortly before the death of Ivanov. Sidorova claimed that she was the lawful wife of Ivanov. In addition, during the marriage, she gave birth to two children of 1950 and 1956 year of birth. Sidorova insisted that only she and her children should be recognized as the legal heirs of Ivanov.
To analyze the situation and draw the appropriate conclusions.

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