Hi Sue, My information came from a letter written in February 1979. The writer, born in NZ in 1906 was the daughter of John Alfred Leece. I received a copy of the letter in 2000 from a lady in NZ asking if I could help her to "back track" her Leece ancestry in the IOM. (we were successful).
In answer to Shane's question 23rd/4 12.24. - I can only assume that her Gt Gt Grandfather facilitated his half-brother's passage to N.Z. There was no one else. .
A possible explanation for the absence of T.M. Davidson in the Immigration Records - "Davison - Thomas. 18 years
Four Roads - Buried K. Rushen 16th Nov 1874" Harry