Faussett formed a collection that was rich in Anglo-Saxon objects of personal adornment, such as pendants, brooches, beads and buckles.
At Oxford he endeavoured to organise a volunteer corps in aid of the cause of Charles Edward Stuart in 1745–6, and his father convened secret meetings of the Jacobite gentry at Heppington.
Towards the close of his life Archbishop Secker gave him the rectory of Monks Horton and the perpetual curacy of Nackington, both in Kent.
He was also a good heraldist and genealogist, visiting about 160 parish churches in east Kent to copy monumental and armorial inscriptions.
He had melted down his duplicates, to the weight of 150 lbs., into a bell inscribed Audi quid tecum loquitur Romana vetustas—Ex ære Romano me conflari fecit B. F. A. S. S. 1766.
Faussett made pecuniary sacrifices in order to excavate, and superintended the opening of barrows with "almost boyish enthusiasm".
This was edited by Charles Roach Smith from the original manuscript in the possession of Joseph Mayer, and published with notes and engravings in 1856 as Inventorium Sepulchrale.
From the numerous antiquities found by him, Faussett formed a collection which was especially rich in Anglo-Saxon objects of personal adornment, such as fibulae (including the Kingston Brooch of gold, garnets and turquoises[2]), pendant ornaments (e.g. gold drops set with garnets), beads, buckles, etc.
In August 1853 Godfrey Faussett's son Bryan offered it for sale to the British Museum, only for it to be declined by the trustees.