. Tatiana (or Tatianna, also romanized as Tatyana, Tatjana, Tatijana, etc.) is a female name of Sabine-Roman origin that became widespread in Eastern Europe. Origin. Tatiana is a feminine, diminutive derivative of the Sabine—and later Latin—name Tatius. King Titus Tatius was the name of a legendary ruler of the Sabines, an Italic tribe living near Rome around the 8th century BC. https://en.wikipedia.org/wiki/Tatiana