I couldn't find anything on immigratin, but I think I found them in 1900, and it lists there year of immigration as 1869. This census lists
Robert, birthdate May 1844, born England, immigrated 1869, coal miner and he owns his home.
Jane, April 1842, 10 children, 6 living, born England, immigrated 1869.
Gus Harry, son, May 1872, Penn, coal miner
Frank, son, June 1875, Penn, coal miner
John, son, Sept 1877, Penn, coal miner
Edward, son, July 1882, Penn, coal miner
Mary E, daughter, Dec 1879, Penn
Searand, daughter, Feb 1889, Penn
Robert J, grandson, Dec 1893, Penn
I'll see what I can find in 1910.
Kath