I am not related to the Valiskas but grew up in Prince George County and knew Albert and his sister Olga well. They lived on a farm at the end of Hollywood Road (Rt 617) in Disputanta. Albert, died in 1995 at the age of 93. His younger sister, Olga, died sometime after that. They are both buried in Blandford Cemetary in Petersburg, Virginia as is the brother George who died in the mid 1970s. None of these three were ever married.
I know they had a sister who was an old maid school teacher who died of cancer before she was old enough to retire. I believe this sister was named Ethel but I am not sure of this. I never heard them speak of Robert or the half-sister Margaret either so I know nothing about them.
I know that Rudolf left the farm and moved to Pennsylvania. He had a son also named Rudolf known in the family as "Rudy" who lived in Pennsylvania who used to come visit at the farm in Prince George back in the 1970s and 80s. I believe he had some children but I am not sure.
Helen married John Zeok of Pennsylvania and had two children John, and Dorothy. Her son John Zeok is a M.D. and lives in Raleigh North Carolina and has two children. Her daughter Dorothy married Bernard Chudoba of Prince George and they have several children.
Hope this info helps!