Thank you for advices and help

The oldest traces of the name, known to date, are in Icelandic grammar . - Proto Norse : https://en.wikipedia.org/wiki/Proto-Norse - Old Norse : https://en.wikipedia.org/wiki/Old_Norse - Root STANG : https://en.wiktionary.org/wiki/stang - Root STONG : https://en.wiktionary.org/wiki/st%C7%ABng - Grammar book : o https://archive.org/details/grammaroficeland00raskuoft/page/n1/mode/2up - p43 ; p73 o [PDF]Det jydske folkesprog grammatisk fremstillet booksnow1.scholarsportal.info/ebooks/.../detjydskefolkesp00varmuoft.pdf 260. Mange Ord af denne Klasse forandre Selvlyden i Fit. And s. §. 248; Tand — Tenner, Angl. Tlnner, s. §. 249; Stang. — Sténger (men Als Stanger, Isl. stangir). Professor Baqué, eminent linguist (Scandinavian languages) of the Sorbonne, during his lifetime, in 1968, certified the Norwegian origin of our name to Nicole STENGER, then her student. The linguistic era concerned is that of "old Norse" Iceland was mainly colonized / populated by Norwegians, hence the linguistic community I wish to establish exchanges with STENGER/STANGER/STÄNGER/STANGE/STANGIR/ ...to deepen the knowledge of the family history Thank you Luc STENGER France