Русско-англо-русский юридический словарь

An executor is a legal term referring to a person named by the maker of a will or nominated by the testator to carry out the instructions of the will. (Wikipedia)

"A testator is a person who has written and executed a last will and testament that is in effect at the time of his/her death. It is any ""person who makes a will.""" (Wikipedia)

A pretermitted heir is a term used in the law of property to describe a person who would likely stand to inherit under a will, except that the testator (the person who wrote the will) did not know, or did not know of, the party at the time the will was written. (Wikipedia)

The notarial will, which is also available in most civil-law countries, is executed so that the testator either dictates its provisions to the notary or hands him an instrument declaring that it contains his will. (Encyclop?dia Britannica)