The entry in the LancsBMD said "Lancaster Register Office or Registrar Attended" so this could very well be a non-conformist church wedding and the most likely ones I’ve narrowed it down to are:
PRESTON, Saul St – Primitive Methodist
M 1846-1886, 1907-1943 Orig reg MPR 36/1/1, MMR 32/7-11
LANCASTER, St Nicholas St – Presbyterian/Unitarian
M 1845-1860, 1877-1909 Orig reg ULA 2/1-2
PRESTON, Church St - Unitarian
M 1842-1937 Orig reg UPR 1-3
John Geddes b ca 1836 is from Liverpool and I am having difficulty moving beyond him without knowing his occupation, a father’s name, occupation or any other relevant information (similarly for Ann, b ca 1832/3, from Carlisle, Cumberland).
In time, as money allows, I plan to order their marriage certificate for my personal files but, in the meantime, if anyone going in person has time to peek at this marriage and copy the info on my behalf I would be greatly appreciative for the “jump start”!

Thanks in advance,
Ronda
(in Ontario, Canada)