The genitive of "tigh", house? The name Tadhg?
Rebekah is not a Gaelic name and therefore doesn't mean anything in Gaelic.
It is not a Gaelic word. Gaelic has no K.
Kelly Tighe is 5' 3".
Roy Tighe is 5' 10".
Jack Tighe was born in 1913.
Jack Tighe died in 2002.
Mary Tighe died in 1810.
Ambrose Tighe died in 1928.
Ambrose Tighe was born in 1859.
James Tighe was born in 1982.
Crazzy doesn't mean anything in Gaelic.
There is no Gaelic form of the name, if that's what you mean.