Hi,
I found more( total of 11) references to Tomashunsas in my records of my relatives,Marcilionis and Kazakevicius.
It gives the names,sometimes occupation, and towns Of Tomashunas from the early and mid 1800s.
Possibly Tomashunas are relatives of Marcilionis & Kazakevicius.They immigrated to the Pittston Pennsylvania area and worked in the coal mines.
Bernie