Personal data
Maria Catharina van Tuyll van Serooskerken
Born 1708   Died 1787  
Madame Lockhorst

Daughter of Reinout Gerard van Tuyll van Serooskerken (1677-1729) and Isabella Agneta Hoeufft van Fontaine Pereuse (1683-1725). Belle de Zuylen's aunt and godmother. Married (1730) to Diderik van Lockhorst (d. 1755), Heer van Ter Meer en Maarssen.

Boswell played whist at Madame Lockhorst's on February 21, 1764.

    Unless otherwise noted, the source for a dated quotation of Boswell's is generally the corresponding volume of the Yale Trade Editions of Boswell's journals.