There was a family tree posted in IoMFHS Journal vol 10 #4 - when I put these online I didnt copy it (it was handwritten and put aside for later processing) - - it shows little real info but is the family of John Bateman = Christian Milburn m 1-mar-1838 - Henry was 5th child of 10 b. 1839 at Lonan - the submitter in 1988 gave descent only for eldest son John.
(give me an email editor@manxnotebook.com and I'll send you a copy
The Bateman family were associated with Laxey Minorca chapel