1. Hendrika Adriana Kolff, born Rotterdam 28 Feb. 1798, deceased there 3 Feb. 1841, married Rotterdam 28 July 1824 Jacob Mees (R.N.L.), born Rotterdam 1 Nov. 1790, fellow founder of Mees, Boer & Moens, after 1847 Mees & Moens, shipping company, trading in colonial products and in Peru-guano, vice-president Chamber of Commerce and Industry 1838-1851, member Prov. Staten of Zuid-Holland 1842-dec., member municipal council van Rotterdam 1847-overl., deceased there 28 Oct. 1854, son of Jan Rudolf and Maria de Prill and wedr. van Anna van Baalen.