Maybe these are the grandparents?
John Smith and Mary Tyson
1851 Maughold
, 02-45, 44, SMITH, John, Ballajorey, Head, Married, 44, Ag Lab, England
, 02-45, 44, SMITH, Mary, Ballajorey, Wife, Married, 36, , England
, 02-45, 44, SMITH, Benjamin, Ballajorey, Son, , 10, , England
, 02-45, 44, SMITH, Elizth, Ballajorey, Daughter, , 8, , Maughold
, 02-45, 44, SMITH, John Thomas, Ballajorey, Son, , 6, , Maughold
, 02-45, 44, SMITH, George, Ballajorey, Son, , 4, , Maughold
, 02-45, 44, SMITH, Henry, Ballajorey, Son, , 1, , Maughold

ELIZTH SMITH Christening: 19 FEB 1843 Maughold
JOHN THOS SMITHChristening: 04 NOV 1844 Maughold
GEORGE SMITH Christening: 31 JAN 1847 Maughold
HENRY SMITH Christening: 24 FEB 1850 Maughold
EDWARD SMITH Christening: 26 DEC 1852 Maughold