Biography
Son of Reinout Gerard van Tuyll van Serooskerken (1677-1729) and Isabella Agneta Hoeufft van Fontaine Pereuse (1683-1725). Married (1759) to Maria-Anna Singendonck. Paternal uncle of Belle de Zuylen.
He was a Lieutenant General in the Cavalry and Adjutant General of William V of Orange.
Life with Boswell
Boswell "Supped elegant at Mademoiselle de Zuylen's with the General" on February 13, 1764, and, on April 13 of that year, apparently supped at the General's.