Ben M. Angel notes: If Leticia Preston was buried at St. Anne's Church on Dawson Street in Dublin, then she must have been buried there after 1720, as the church was not in place until then (this presumes that the church yard began its use only after the church was finished). As a possible alternate date, the Parish of St. Anne's was founded in 1707.

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From A History of the County of Buckingham: Volume 4, Willen, Manor:

http://www.british-history.ac.uk/report.aspx?compid=62623

Roger Nicholls and his trustees transferred their interest in 1653 to John Trevor and Richard Knightley, (fn. 29) and the manor was sold not long after to Col. Robert Hammond of Chertsey (Surrey), the custodian of Charles I in the Isle of Wight. (fn. 30) He died in 1654, leaving three daughters, Elizabeth, Mary and Letitia, as his co-heirs. (fn. 31) His widow Mary, the sixth daughter of John Hampden, the 'Patriot,' to whom Hammond left Willen for life, (fn. 32) married in 1656 Sir John Hobart, third baronet, (fn. 33) and with him conveyed the manor in 1672 to Herbert Thornedicke, clerk, and Barnabas Clay, clerk, (fn. 34) as a preliminary to its sale by Elizabeth Hammond, Sir Edward and Mary Massie, Phineas and Letitia Preston (the daughters of Col. Hammond and their husbands), to the celebrated Dr. Richard Busby, of Westminster School, later in the same year. (fn. 35)

Footnotes:

• 29 Feet of F. Bucks. East. 1653.
• 30 Add. MS. 5839, p. 411.
• 31 Ibid. p. 412.
• 32 P.C.C. 438 Alchin.
• 33 G.E.C. Complete Baronetage, i, 13.
• 34 Feet of F. Bucks. East. 24 Chas. II.
• 35 Ibid. Mich. 24 Chas. II.