My ancestors were living in Shenandoah (Pennsylvania) and their surname was also Jankauskas. The whole family came to the USA before 1900 from Lithuania, some went back to the homeland, but as I know, some of them have stayed in America.
Names of my great-great-grandparents were Agata and Josef Jankowski (Jankauskas), but I know, that not only they went to the USA - also their sibilings, cousins ... So I'm also on search of any information about Jankauskas' in area of Shenandoah.