E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Gemmagog.
Son of the giant Oromdon, and inventor of the Poulan shoesi.e. shoes with a spur behind, and turned-up toes fastened to the knees. These shoes were forbidden by Charles V. of France in 1365, but the fashion revived again. (Duchat: Ouvres de Rabelais.)
1
According to the same authority, giants were great inventors: Erix invented legerdemain; Gebbara, drinking healths; Gemmagog, Poulan shoes;
Hapmouche, drying and smoking neats tongues; etc. etc.