In my husband's family some of his grandcestors were a mother Mary Loska b 1819 (said to be Germany) and Anna Loska b. 1862 (said to be Germany.) Together, they appear to have moved to the United States of America and settled in Cambria County, PA.
But, to me that sounds like a Polish origin surname. Does anyone have information about a Loska or Loski/Losky family in Poland?