James Boswell's uncle John was a member of a sect known as the Glasites.
Rumoured to be the illegitimate son of King Victor Amadeus II (1666-1732) of Sardinia, little is known about Victor except that he acted as a supervisor for the education of some of the princes of the electorate of Saxony in the 1750s and early 1760s, including Franz Xavier and Frederick Augustus I.
According to The Journal of his German and Swiss Travels, 1764 Victor "was accused of extra-marital relations and fathering a child out of wedlock, and would be relieved of his duties by Prince Xaver three weeks after JB's visit [to Dresden]." (p. 161)
Life with Boswell:
Boswell was presented to the Court of Saxony on October 12, 1764 and there saw Abbé Victor whom he described as "a very pretty man".