DAVID AND ELIZABETH OLIVER
David was the youngest of the children of Robert and Ellen Andrews Oliver, the only one born in the USA, in Pennsylvania.

By 1910, David had married and moved to Chicago, Illinois with his siblings.

In the 1910 census, David and Elizabeth have a daughter, Evlyn, age 4, who is not shown in the 1920 census. Evlyn was born in Illinois according to the census, which places David and Elizabeth in Illinois by 1906.

The 1920 census shows the following family members:

David H. age 43  born in Pennsylvania engineer malt?
Elizabeth  age 41 born in Ireland
Ross  12  born in Illinois
Kenny 8 born in Illinois
Howard 5 born in Ilinois

According to the 1910 and 1920 censuses, Elizabeth immigrated from Ireland in 1900.