The Spanish, Italian and Portuguese Old Masters all painted on hand-woven patterned linen canvases. This 'first layer' has been given only sporadic study by art historians. I started deciphering the weaving draft of El Greco’s 'The Burial of the Count of Orgaz', in 2016. It recently culminated in authentic, hand-woven reconstructions of historic canvases.
Titian 'The Vendramin Family' patterned canvas
...felt like a puzzle but I made the draft of the pattern of this canvas. Had to adept an existing pattern in the weaving book from XVI century, Ziegler, Weber Kunst und Bild Buch. Will soon weave a reconstruction!