This should have read the 1861 census!
"Your Thomas Phillip C. is in the 1851 census with Julia, in Ballaugh. Glen Tavern was given as the address of the entry above their one.
Christian Miller Hd W 71 School Mistress b.Town Ramsey
Thomas P Christian son-in-law Marr 35 Engineer, b.London
Julia L Christian Daur Marr 33 School Mistress b. IOM Castletown"
It looks though Thomas P C was younger than Julia and has added on a few years.
Sue