"process of making mats," 1720, from mat (n.1). Meaning "fabric of coarse material for mats" is from 1748.
matting (n.2)
"ornamental border of a picture," 1864 from verbal derivative of mat (n.2).
matterless
matter-of-fact
matters
Matthew
Matthias
matting
mattock
mattress
maturate
maturation
mature