Hi Leif. Welcome to WikiTree. Which John Oglander are you referring to? There are several with WikiTree profiles. Can you give a link to the one you have in mind? If there is no profile, is it possible for you to give some more details - dates, places etc - anything that may help to identify which two people you have in mind.
I may have missed it, but at the moment there seems to be no WikiTree profile for any Mary (Oglander) Smith.