Wiernsheim became a possession ofMaulbronn Monastery in 1259 and was governed by the monastery's district office until 1806. When Maulbronn became a possession of theDuchy of Württemberg in 1504, Wiernsheim and the village of Iptingen also became part of the Duchy. The villages of Pinache and Serres were founded in 1699 byWaldensians fleeing persecution inPiedmont. On 18 March 1806, the administrative district of Maulbronn was reorganized intoan Oberamt [de], to which Wiernsheim and Iptingen were assigned. Iptingen was reassigned around 1842 to the jurisdiction ofVaihingen. It was joined on 1 October 1938 when the district of Maulbronn was dissolved and its constituents were assigned to the newLandkreis Vaihingen [de]. On 1 January 1970, Wiernsheim incorporated Pinache. As part of1973 Baden-Württemberg district reform [de], Wiernsheim, Iptingen, and Serres were assigned on 1 January 1973 to the newly createdEnz district. The next year, Wiernsheim incorporated Iptingen and Serres.[3]
Wiernsheims' municipalcoat of arms shows agoldencrosier, wrapped insilver oak branches, upon afield offield framed on either side by five goldensix-pointed stars. The crosier is a reference to Maulbronn, though the oak branches wrapped around it have no definite meaning. The stars were added around 1900 and are references to the Waldensian foundations at the villages of Pinache and Serres. The present pattern was devised in 1939 and itstincture in 1956. TheFederal Ministry of the Interior approved both for official use by Wiernsheim on 12 December 1957.[3]