Subjects of the country festivals (Kermesse) that were popularized by David Teniers, father and son to the extent that paintings and tapestries showing such rustic themes were called Ténières. Michau painted designs and perhaps provided full-scale cartoons for tapestry weavers, for surviving records of the Brussels tapestry workshop of Pieter van der Borcht record Teniers peints par le fameux Sr Michau, such Teniers-like subjects painted by "the famous Sieur Michau".
Among his work, on wooden or copper panels, in public collections are the Summer and Winter landscapes in Vienna.
- "Théobald Michau est le dernier représentant d'une conception du paysage qui s'est perpétuée en Flandre durant plus d'un siècle." (Yvonne Thiéryl. 2 1860:502).
- "Michau's landscapes with cattle and figures are of frequent occurrence in public sales, but do not obtain high prices" (Michael Bryan, Dictionary of Painters and Engravers, biographical and critical, 1849 s.v. "Michau, Theobald".)
- Guy Delmarcel, Flemish tapestry from the 15th to the 18th century 1999:352.
- Delmarcel 1999.
- Noted by Waagen 1860.
- Bryan, Dictionary of painters and engravers, s.v. Lonsing, François Joseph".