to find out more about this family and for finding links typ in at google "Grotta zu Grottenegg".
you find them in the list for carinthian nobility
Kärnten = Carinthiahttp://www.genealogy.at/english/adelsgeschlechter_eng.htmhttp://www.dagiusi.it/dagiusi.asp?language=ger&pg=not
the family was from Malborghet–Malborghetto in the Kanaltal - Val Canale - Canal-valley in the austrian province Görz-Gorizia, which is after end of WW1 1919 italian. in the following link is listed that they came from Lecco, which is in the Trentino-Alto Adige = South-Tyrol west of it. they owned some castles in Carinthia before and about centuries like Finkenstein, Kraig, Gradenegg, Kellerberg, Treffen......
under 2114. GROTTA zu GROTTENEGG Fhr. auf FINCKHENSTEIN u. KREYG in next link is some written http://www.ankershofen.at/ahnenliste.htmlhttp://www.treffen.at/index.php?option=com_content&view=...http://www.treffen.at/index.php?option=com_content&view=...http://www.burgen-austria.com/Archiv.asp?Artikel=Kellerberg
you can look for places at www.expedia.com