Matthias Steinl (otherwise Steindel, Staindle, Steindl or Stinle) (c. 1644–18 April 1727) was an Austrian painter, architect and designer, and one of the country's best known Baroque sculptors. Together with Johann Bernhard Fischer von Erlach (1656–1723) and his rival Johann Lukas von Hildebrandt (1668–1765), Steinl may be considered one of the most influential architects to introduce the High Baroque style to Austria. He probably originated from the area around Salzburg and probably trained as a craftsman and artist in Austria, although he may have learned to sculpt in the Netherlands and in Prague. The Victoria and Albert Museum in London has one of his earliest identified sculptures, an ivory statuette of a triton (c.1670-1675). He was definitely employed in the 1670s as a sculptor in Leubus Abbey (now Lubiąż) in the Lower Silesian Voivodeship, where he took over the workshop of the deceased sculptor Matthias Knote, whose widow he married in 1677. Most of his works here (the main altar, side altars, the pulpit and the choir stalls) were destroyed after World War II. Steinl directed this workshop till 1682, when he moved to Breslau, where the prince-bishop recommended him to the court in Vienna. During his stay in Breslau he provided the sculptures on the high altar of Heinrichau Abbey (now Henryków). He also started as a designer sketching cartouches, garlands and tendrils. In 1688 in Vienna he became the ivory engraver for the emperor. From this period dates the exceptional carving Allegory of the elements water and air, made out of a walrus tusk (c. 1688-1690); and the ivory equestrian statues of Leopold I (1690–1693) and Joseph I (dated 1693) From the 1690s Steinl also directed an important sculpture workshop in Vienna that produced many religious objects, among them the following: the interior decoration for the chapel of the Hofburg (now destroyed); the Dominican church in Vienna: the pulpit (1700); the Peterskirche in Vienna: the pulpit, side altars, pews and confessionals (1726) (he had already designed the dome of this church in 1715-16); the Franciscan church in Vienna: the altar; the pilgrimage church of Hietzing, Vienna: the high altar and two side altars (1698); the statue Immaculata (1688), now at the Liebighaus in Frankfurt am Main; St. Stephen's Cathedral, Vienna: two altars (1700 and 1708) with stone sculptures. Around 1688, Steinl became more interested in architecture. The Swedish National Museum of Fine Arts in Stockholm has a design