These connections allowed Grotefend to figure out the cuneiform characters that are part of Darius, Darius's father Hystaspes, and Darius's son Xerxes. He equated the letters with the name "d-a-r-h-e-u-sh" for Darius, as known from the Greeks. This identification was correct, although the actual Persian spelling was "da-a-ra-ya-va-u-sha", but this was unknown at the time. Grotefend similarly equated the sequence with "kh-sh-h-e-r-sh-e" for Xerxes, which again was right, but the actual Old Persian transcription was "wsa-sha-ya-a-ra-sha-a". Finally, he matched the sequence of the father who was not a king with Hystaspes, but again with the supposed Persian reading of "g-o-sh-t-a-s-p", rather than the actual Old Persian "vi-i-sha-ta-a-sa-pa".