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First, Russian middle names always are father's names, patronyms. Women keep their middle name after the marriage while their last name (family name) is changed as usual.

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In Russian, patronyms for men always end in -ICH and for women - in -NA. For a given male name, the father's name, a pair of such patronyms (in -ICH and -NA) exists. For some names, short form are also available.

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I mean Russian patronyms, these are not used in West and South Slavic countries, however.

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Ivayla has already given some examples. Here is one more for names in a-declension:

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Father Nikita: Nikitich, Nikitichna.

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Assignining patronyms as middle names is obligatory in Russia. Hence, even non-Russian father's name should have a pair of patronyms:

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Father Ali: Alievich, Alievna.

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