I am trying to find:
The date and county in which these two married.
The county of births of the first 3 children, especially William White, born 1875.

Rebecca J Vandling, also known as Jennie and Jane born to:
Gilbert V Vandling/Wendling and Rachel Shipman.
1860 - Rebecca J Vandling living with her parents in Northumberland County.
1870 - Approximate marriage date to John W White, B: 1875 Ireland
I cannot find a matching 1870 census record for these two.)
Children Born in Pennsylvania from Census records.
1872 Mabel White
1875 William White...... I am trying to find if this William is my GGrandfather
1877 Clara A White
1880 Residence: Pine Creek, Jefferson, Pennsylvania

If there is anyone who can help me, this is most appreciated.