I've been having a lot of trouble following this thread.
It would be very helpful if you would give the full references.

Frederick Louis Carine was born 3 Jul 1879 to Frederick Carine and Eleanor Farrell.

He must have been 11 not 1 in 1891.

The only entry I have found in 1881 is confusing:
1881, Douglas, district 5, schedule 290, 4 Hanover Street
James Carine, head, married, 40, shoemaker, Liverpool
Ann, wife, married, 43, Malew
Beatrice, daughter, unmarried, 3, Liverpool
Frederick L, son, unmarried, 1, Douglas

1891, Strathallan Park Orphanage
Frederick L Carine, 11,

1901, Douglas, district 7, scheudle 74, 3 Nelson Street (3 rooms)
Ann Kelly, head, married, 69, Malew
Louis F Carine, grand son, single, 23, general labourer, Douglas
Robert H, grandson, 7, Wales
Sarah A J, grand daughter, 5, Wales.

There were a total of 5 families living in 11 rooms at this address.