gotcha- marriage of Eleanor from Windermere

I shouldn't have panicked 'losing' Eleanor Lewis.  Although her name is relatively common, I had her birthplace of Windermere up my sleeve.  But you can't rely on that, as what if she'd died soon after marriage, or a variant of the birthplace been given in a census?  I already had spotted her sister Isabella in the 1911 Blackburn census, and found a marriage there, so I knew straight away the circled entry was for my relative.  Her daughter died nearly a hundred years later nearby, unmarried.