Stapleton op II p.83...
http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/25774 <http://www.w3.org/nl/lemon/frac#Attestation>
Stapleton op II p.83...
Stapleton op II p.832 (1620) Quare nullo nititur fundamento falsa haec suspicio: similiter et illud etiam quod Hornus submussitat. PONTANVS-Isaac hist Dan p.596 (1631) Engelbertus ... abiens ac secum submussitans, 'imo et revertar quandoque', inquit.