The scarcity of Groser, grocer, is not surprising, for the word, aphetic for Engrosser, originally meaning a wholesale dealer, one who sold en gros, is of comparatively late occurrence.
"The Romance of Names"
Ernest Weekley
His friend Gondomar, the Spanish ambassador, once called him an "Engrosser of antiquities."
"Studies from Court and Cloister"
J.M. Stone
"Then please," entreated Hubert, "take him away," pointing to the Engrosser of their mother.
"The Clever Woman of the Family"
Charlotte M. Yonge