In 1882-4, Frances Groome's Ordnance Gazetteer of Scotland described Smeaton like this:
Smeaton, a mansion of 1790, in Prestonkirk parish, Haddingtonshire, 1½ mile N of East Linton. It is interesting as containing several relics of Mary Queen of Scots-viz., an autograph letter, an altar cloth of her embroidering, a comb, a black satin body, etc. In 1538 Sir Patrick Hepburn of Wauchton gave half the lands of Smeaton and all Smeaton-Crux to his second son, Adam, whose last male descendant was succeeded in 1764 by his nephew, George Buchan of Letham. ...
He was created a baronet in 1815; and his grandson, Sir Thomas Buchan Hepburn, third Bart. (b. 1804; suc. 1833), holds 2772 acres in the shire, valued at £8513 per annum.Ord. Sur., sh. 33, 1863. See J. Small's Castles and Mansions of the Lothians (Edinb. 1883).
Additional information about this locality is available for Prestonkirk
GB Historical GIS / University of Portsmouth, History of Smeaton in East Lothian | Map and description, A Vision of Britain through Time.
Date accessed: 28th April 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Smeaton ".