Hi, Are you suggesting that the Washington Post does not write good English? It certainly is not a common phrase, but I have no trouble in understanding it in the sentence. Do you?
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MeggPhaggSioux "We need to eliminate the tradition of women taking their husband’s name at marriage ." (= at the time of marriage)
This only refers to when the couple gets married, not to the whole duration of the marriage.
Dictionary According to entry 1 & 2, "marr