From the book:

Bucks County Intelligencer Marriage Notices, Vol. 1, 1804-1834, Francis
Wise Waite, ed., Bucks County Genealogical Society, Doylestown, PA, 1986


p. 117 -- 
3 Jan 1823 -- Lake, David to Mary Gauger, by Rev. Mr. Leonard in Kingwood,
              NJ (18 Feb 1823)
5 Jan 1815 -- Lake, Mary (see Joseph Flack, Jr.)

p. 66 --
5 Jan 1815 -- Flack, Jr., Joseph to Mary Lake, both of Buckingham, by Rovt.
Shewell, Esq. (9 Jan 1815)


The first date is the marriage date, and the date in parentheses is the 
newspaper issue that the announcement appeared in.