I don't know if this is your family but it sounds interesting and worth a second look.
Married by License March 11, 1873 in Windsor,Hants County, NS (Presbyterian)Rev. J. L . Murdoch officiating Lewis Langille, bachelor, age 26, carpenter, residing in River John, Pictou Co., Born River John, son of Robert and Mary Married to Amelia Turner, spinster, age 18, residing in Parrsboro, dau of Charles and Mary Witnesses:George William Langille and Maggie Armstrong
Another interesting marriage is in River John, Oct. 3, 1872, Presbyterian Robert Langille, widower married to Elizabeth Langille, spinster No other information given.Whether this is the above Robert is hard to say.
In the 1881 Census available at www.familysearch.org there are no less than 5 Robert Langills’ in just the River John census district of Pictou Co.From the ages probably at least 3 generations, most claiming Swiss heritage
One particularly interesting family group from above is Mrs. Elizabeth Langill, age 39, widow, Head, Farmer, Presbyterian, born USA Solomon B. Langill, age 7 born USA, Robert A. Langill, age 4, born USA Could be the widow of the Robert above Hope this helps Burdette