Arbory marriages 1849-1883 are on LDS film no. 0106193 Items 3-4: Christenings, marriages, burials 1849-1883. This film can be viewed through any Family History Centre worldwide, or at the Manx Museum Library. For FHCs look in the phone book under Church of Jesus Christ of Latter Day Saints, which are open to all. You can usually order several films at a time for a small fee.
Marriages in 1871 should give both fathers' names and occupations, as well as details about the couple.
These are the LDS film numbers for: Church of England. Parish Church of Kirk-Malew (Isle of Man):
Christenings 1706-1804 Marriages 1650-1757 Burials 1649-1787 Film 106730
Christenings 1804-1848 Marriages 1784-1830 Film 106731
Marriages 1788-1848 Burials 1788-1849 Index to christening, marriages 1784-1849 Film 106732
Christening, marriages, burials 1849-1883 106192
Your 1836 baptism for Thomas Kennaugh should be on the above film no.106731.
Sue