Ion Th. Simionescu

Simionescu (born Ion Gheorghiu; 10 July 1873 – 7 January 1944) was a Romanian geologist, paleontologist and naturalist.

Born in Fântânele, Bacău County, his parents Maria and Toader Gheorghiu died when he was a young child.

[5] Writing in late July 1941, amidst the ongoing Operation Barbarossa but before the Transnistria Governorate was set us, he praised the liberation of "our Transnistrian brothers", accomplished "thanks to the freedom-bringing German and Romanian armies".

He published a treatise on geology in 1927 and a number of studies on Romania's rock formations, particularly Dâmbovicioara, Dobrudja and the Moldavian Plateau.

Aside from his research, he made efforts to popularize science, traveling widely and holding hundreds of conferences in locations ranging from the Romanian Athenaeum to Șendriceni village.