The only Robert I have is:
2. ROBERT Keaney - International Genealogical Index
Gender: Male Christening: 07 APR 1819 Arbory, Isle Of Man, England
His age chops and changes a bit in the census, 1841 he's 20, 1851 he's 32, 1861 he's 40. No sign of him in online census indexes after that, but doesn't appear to have died until:
KENNAH, Robert 78 Arb 2 Nov 1897
But you're more interested in Jane .... sorry :)
Looking at submitted records on the IGI it seems as though Jane is the elder sibling of a James Taggart, children of William Taggart and Ann Curphey. This lists the youngest sibling as being born in 1844, which may discount the Mooaney Mooar connection as, there's a will of Wm Taggart of Moneymoar at http://www.iomfhs.im/lawsons/twill/1839_009.html
that mentions a daughter Jane. There are though a fair few William Taggart's about at that time :) There's a regular connection to Ballagilbert through the Taggart family as there is with my Kennah and beyond connections.
Only way to be sure is to see the actual marriage and christening entries for Jane. Unfortunately I'm no expert on this stuff, good places to ask questions/check info are:http://www.isleofman.com/Community/Genealogy/Genealogy/Bulle...
follow the "research" link.