sentences:  Datestones are a subtly different category in that they primarily commemorate the construction of a building rather than record a marriage.They may do both and such symbolism as entwined hearts indicates that they serve to perform both functions.Date stones are far more common than marriage stones and are found on most types of vernacular buildings, indeed they are in vogue again today (2007), partly through the influence of the significance of the 2000 millennium year.