This looks like a possible for George's arrival you would have to look at transcript to see which are related
Index to Assisted British Immigration 1839-1871
Ship: THEODORE - December 1852
Book:7 Page: 71
FORBES ALEXANDER age: 48
FORBES DONALD age: 3
FORBES DONALD age: 4
FORBES ELIZA age: 31
FORBES JANET age: 2
FORBES MARGARET age: 29
FORBES MARY age: 1 (only forbes on page 81)
FORBES WILLIAM age: 38

Cheers
Tania