The surname Teramano - is that from the UK or Italy?
A spelling variant of Teramo. ... The town of Teramo is located at the junction where the Tordino meets the Vezzola river in the Abruzzo region of central Italy............ so a locational surname
Ted Pack: The meager results for it in https
The meager results for it in https://www.familysearch.org/search/hr/search suggest it is Italian, but very rare.
Looks Italian...Get few British names ending in O other than the odd Cornish one...
You must have meant " Geranimo " ....it's American .