Hello Bob. Here are some names from the Catholic registers that you can have fun sorting out. Probably not all your family but you will be the best one to know.
George Longstaff, born 22/March/1860, baptised 14/Apr/1860, Parents William and Winifred Longstaff, maiden name Hogan, sponsor Bridget Gorman.
Jacobus (James) Longstaff, born 11/February/1793, baptised 28/May/1872 (convert, and looking at his age could have been on his death bed?, parents Jonathan and Maria Longstaff, maiden name Hird.
Thomas Gulielmus(William) born 31/March/1880, baptised 6/June/1880, parents Joannes (John) and Maria Longstaff, maiden name Matthews, sponsors Josephus Longstaff and Elizabeth Binks.
Owen Longstaff, Barnard castle, died 1/July/1872 aged 87.
Joannes (John) Longstaff, Startforth, died 23/August/1916 aged 69 years.
Maria Joanna Longstaff, Startforth, died 6/April/1922 age 83 years.
Joannes Laurence Longstaff married Maria Joanna Matthews on the 7/July/1879. grooms father Georgius Longstaff, brides parents Thomas and Elizabeth Matthews, witnesses Jacobus Matthews and Elizabeth Binks.
Thomas Gulielmus Longstaff, startforth married Ann Dawson, Barnard Castle, 27/June/1917, grooms father Joannes Longstaff, brides father Jacobi Dawson, witnesses Thomas Jacobus Walker and maria Eva Banks.
Note:- In the baptism register there is a note that says:- Elizabeth Rutter, the first baptism in a font gifted by Lucy and Emma Longstaff 1861.