The petition of the congrgation is not available at PRONI but has been published in the Irish Genealogist, vol. 13, No. 2, (2011).
https://www.irishancestors.ie/balteagh-co-londonderry-census-substitute-1828-94Below are the Long entries - they are grouped together as follows -
Drumsurn Upper & Lower
William Long (2 adults) Children: Esther, Mary, Matthew, Elizabeth, Nancy, Jane, William, Joseph
Matthew Long (2 adults) Children: Mary, John, William, James, Oliver, Thomas
Samuel Long (2 adults) Children: Robert, Mary, Peggy
William Long (2 adults) Children: Jane, Mary, Peggy
John Armstrong (2 adults) and wife
Widow Long & And Sister