I believe that the "x" signifies unable to read/write.

Caesar seems to be s/o Thomas Craine/Ann Corran who md 8 Aug 1835 Michael, ch 15 Aug 1858 Ballaugh
1861 Index
2 26 Michael
CRAINE
Caesar 3 b Michael
Thomas 52 b Ballaugh
William 23 b Michael
Elizabeth 6 b Michael
Ann 48 b Michael

1881 Census
02,09,51,
CRAINE, Ann,Glen Wyllin,Head,Widow,67,,Michael
CRAINE, Caesar,Glen Wyllin,Son,Unmarried,22,Lead Miner,Michael
CRAINE, Elizabeth,Glen Wyllin,Daughter,Unmarried,25,Egg Gatherer,Michael

Elizabeth seems to be d/o John Shimmin/Catherine Boyde who md 14 May 1846 Marown ch 16 May 1857 German
1861 Index
German 1 60
Shimmin
Catherine 42 b Ballaugh
John 61 b Malew
Elizabeth 4 b Ballaugh
Ann 9 b Ballaugh
John 6mo b Ballaugh

1881 Michael
02,12,67
CANNON, John James,Coolshalague,Head,Widower,50,Farmer 62 Ac,Michael
CANNON, John Wm,Coolshalague,Son,Married,22,Farmers son,Michael
SHIMMIN, Cath,Coolshalague,Servant,Widow,65,Housekeeper,Ballaugh
SHIMMIN, Elizth,Coolshalague,Servant,Unmarried,23,Domestic,Marown