James Boswell's uncle John was a member of a sect known as the Glasites.
Maria Phillipina Jacoba PieckBorn 1735
Life with Boswell:
Boswell dined at the Wilhem's on December 26, 1763. Apparently, Madame de Wilhem was somewhat critial of Boswell's Utrecht acquaintance, the Countess of Nassau Beverweerd. He visited the Wilhem's on a couple of other occasions during his stay in Holland.