sentences:  In the time between these two donations, that is, between 575 and 590 but likely nearer the latter, the area around Oberkirchen with the western part of Herchweiler's municipal area – the part that was in the Saarland before the 2004 boundary adjustment – was donated from royal ownership, but by whom, it is not known.Thirteenth-century documents from Tholey Abbey and even 9th-century records that point to the Church of the Saviour in Frankfurt as the recipient have not led researchers near enough to the time of these donations for the recipient to be clear.The border splitting Herchweiler into two pieces remained in the time that followed, in one form or another, until the transfer of territory on 1 January 2004.