Sir Sidney Montague, of Hinchinbrooke, in Huntingdonshire, Knt, master of the requests to King Charles I.
---The Baronetage of England. T. Wotton, 1771.
For a family tree of Sir Sidney Mountagu: http://www.werelate.org/wiki/Person:Sidney_Mont...
Chart showing the number of references in each month of the diary’s entries.