XVq. Hendrik Kolff, born Rotterdam 29 Dec. 1853, member firma Tollens & Co., vernis- and verffabrikanten, deceased Rotterdam 5 Jan. 1913, married Rotterdam 11 Apr. 1889 Anna Joanna Havelaar, born Rotterdam 25 Feb. 1863, deceased The Hague 25 Feb. 1942, daughter of Jacob Petrus and Catharina Albertina Rueb.
From this marriage:
1. Kind, born Rotterdam 18 Nov. 1889, deceased there 19 Nov. 1889.
2. Adrianus Quirinus, follows XVIt.
3. Hendrik Kolff (1st Heerendiner), born Rotterdam 7 June 1895, member firma Tollens & Co., vernis- and verffabrikanten there, deceased Rotterdam 16 Jan. 1921.
4. Cornelis Kolff (R.N.L., O.O.N.) (De Colve XVI) (Geheugen van Nederland), born Rotterdam 28 June 1897, directeur firma Tollens & Co., vernis- and verffabrikanten there, voorzitter Kon. Ned. Vereeniging voor Luchtvaart, res.-officier veldart., last 1st luitenant, deceased Rotterdam 20 May 1968.
5. Joan, follows XVIu.

XVIt. Adrianus Quirinus Kolff (1st Heerendiner), born Rotterdam 23 Dec. 1890, merchant, deceased Hilversum 25 Apr. 1963, married 1st Rotterdam 4 Dec. 1913 (echtsch. uitgespr. arrond.rechtbank The Hague 19 Jan. 1928) Wilhelmina Jacoba Havelaar, born Rotterdam 4 Oct. 1891, deceased The Hague 2 May 1978, daughter of Joost and Cornelia Francisca Maria Schadee; she remarried Londen 14 June 1928 (echtsch. ingeschr. The Hague 14 Dec. 1934) Dr. Herman Anton Joseph Kessler; married 2nd Rijswijk (Z.-H.) 15 Sept. 1928 Elisabeth Helene Smit, born Amsterdam 20 Apr. 1905, deceased Hilversum 17 Dec. 1968, daughter of Roelof Coenraad and Paula Adèle Zimmermann.
From the first marriage:
1. Peggy Jane Kolff, born The Hague 25 Jan. 1920, deceased Neerpelt (Belgium) 25 June 2012, married Londen 6 Apr. 1951 Willem George Pearson, born West Hartlepool (Durham, Eng.) 18 Aug. 1907, mijnhout importeur, deceased Guisborough (Yorkshire) 6 Feb. 1987, son of George Thompson Pearson and Robina Huan Wilie.
From the second marriage:
2. Adrianus Quirinus, follows XVIIt.
3. Roelof Coenraad, follows XVIIu.

XVIIt. Adrianus Quirinus Kolff, born Wassenaar 15 July 1931, oud-directeur firma Tollens & Co., deceased Rotterdam 9 February 2014, vernis- and verffabr. at Rotterdam/Breda, married Rotterdam 1 June 1957 Karenina de Block, born Laren (N.-H.) 27 July 1937, deceased Rotterdam 21 April 2014, daughter of Maarten Remy and Johanna Mathilde Karen Sleeswijk.
From this marriage:
1. Quirina Kolff, born Rhoon 16 Sept. 1958, married 1st Rhoon 26 Sept. 1981 (echtsch. uitgespr. 1996) Daniël Paul François Dutilh, born Rotterdam 22 Aug. 1955, statutair directeur Vertom Scheepvaart and Handelsmij. B.V. Rotterdam, son of Mr. Ian Jacob and Johanna Catharina Vriesendorp, married 2nd New Hope (PA, USA) 13 July 2003 James Reginald Harman.
2. Maarten Cornelis, follows XVIIIs.
3. Saskia Johanna Helene Kolff (Board 2007-2016), born Rhoon 2 March 1963, costumiere and secretaresse, married Veere 20 september 1997 Timothy James van Doorn.

XVIIIs. Drs. Maarten Cornelis Kolff, born Rhoon 2 May 1961, econ.drs., werkzaam ABN AMRO, married Wassenaar 10 May 1991 Wendy Francine Westcott, B.A., born Santiago de Chile 14 July 1962, daughter of Anthony John and Diana Tabingh Suermondt.
From this marriage:
1. Anthony Quireyn Kolff, born Amsterdam 27 Feb. 1992.
2. Philip Maarten Kolff, born Blaricum 9 Aug. 1994.
3. Felicia Diana Karenina, born Bussum 17 januari 1998.

XVIIu. Roelof Coenraad Kolff (R.O.N.), Officier de l'Ordre National du Mérite (Fr.), born Wassenaar 30 July 1935, last gen.-secretary Nederlandsche Mij. voor Nijverheid and Handel at Haarlem (1987-1998) and hon. consul of France (1992-2001) there, married The Hague 13 (in church 14) Dec. 1968 Jkvr. Clara Catharina Elisabeth Gevers Deynoot, born The Hague 24 Aug. 1942, employee Min. v. Binnenl. Zkn., after Arrondissementsrechtbank at Haarlem (1979-1999), daughter of Jhr. Mr. Gerard Theodoor and Ada Wilhelmina van Tienhoven.
From this marriage:
1. Adriaan Quirijn, follows XVIIIu.
2. Michaël Arthur Constantijn, follows XVIIIv.

XVIIIu. Adriaan Quirijn Kolff, born Haarlem 9 June 1970, senior manager, married Bloemendaal 12 May (in church New York 28 mei) 2000 Nancy Victoria, born New York, 31 Dec. 1970, daughter of Victorino Rodriguez-Fernandez and Maria Elvira (Rodriguez-Hermida).
From this marriage:
1. Michael Victorino Kolff, born Madrid 20 Jan. 2003.
2. Jamie Alexander Kolff, born New York 27 May 2004.
3. Oliver Conrad Kolff, born Scarsdale (NY) 4 May 2008.

XVIIIv. Michaël Arthur Constantijn Kolff, born Haarlem 13 Sept. 1972, jurist, teamleader ING-Group, married Driebergen-Rijsenburg 1 Dec. (in church Amsterdam 2 dec.) 2006 Femke Otten, born Arnhem 21 Aug. 1973, daughter of Franciscus Paulus Johannes Maria Otten and Petronella Adriana Johanna Maria van Nuenen.
From this marriage:
1. Grace Quirine Kolff, born Amsterdam 4 Feb. 2008.
2. Sweder Frans Coenraad Kolff, born Haarlem 25 Feb. 2011.

XVIu. Joan Kolff, born Rotterdam 3 Sept. 1904, agent van buitenlandse huizen, deceased Rotterdam 3 Apr. 1980, married Rotterdam 22 Sept. 1927 Mona Blythe Basilewitch, born Dairen (China) 3 Oct. 1902, deceased Rotterdam 26 Oct. 1981, daughter of Andrew and Margareth Guthrie.
From this marriage:
1. Monna Blythe Kolff, born Londen 3 Apr. 1930, oud-lerares scheikunde, married Leiden 22 Sept. 1955 (echtsch. ingeschr. there 25 Feb. 1969) Drs. Willem Oudemans, born The Hague 24 Oct. 1923, geol.drs., geoloog, zn. van Willem and Frederika Wilhelimina Sijthoff.
2. Hendrik Cornelis, follows XVIIv.

XVIIv. Hendrik Cornelis Kolff (Links), born Rotterdam 27 Apr. 1934, oud-hoofd dienstencentrum automatisering Dir. Econ. Beheer Kon. Landmacht, deceased Berkel en Rodenrijs 20 April 2015, married Delft 13 July 1962 Alida Maria Thijsse, born Delft 11 May 1939, actrice, daughter of Elias and Marie Gerarda Ruisch.
From this marriage:
1. Mona Marie Kolff, born The Hague 17 Jan. 1970, ICT specialist.
2. Anne Louise Kolff, born Moerkapelle 20 Aug. 1972, boekhoudster.

XVr. Cornelis Kolff (Geheugen van Nederland), born Rotterdam 28 March 1858, member firma Kolff & Co., handelaren in tabak, consul-generaal van Zweden at Rotterdam 1907-overl., member Prov. Staten van Zuid-Holland 1905-1910, deceased Rotterdam 1 Feb. 1917, married Rotterdam 11 Oct. 1888 Sara Adriana Petronella Viruly, born Rotterdam 17 Oct. 1865, deceased Baarn 24 Nov. 1943, daughter of Marie and Maria Johanna Gleichmann.
From this marriage:
1. Maria Johanna Kolff, born Rotterdam 27 Dec. 1889, deceased Baarn 17 May 1972, married Rotterdam 18 Nov. 1909 François Eugène baron van Heerdt, born Utrecht 17 Oct. 1877, officier cav. 1904-, laatst. 1st luitenant 1908-1919, ritmeester tit., deceased Baarn 10 July 1948, son of baron Pierre François and Jkvr. Eugénie Clementine Boddaert.
2. Tonia (A.?) Kolff, born Rotterdam 3 Oct. 1891, deceased Baarn 15 March 1952, married Rotterdam 26 March 1914 Mr. Rudolph Egeler, born Rotterdam 26 May 1886, directeur Rotterdamsche Bank N.V., kantoor Amsterdam, deceased there 26 March 1933, son of Antoine Rudolph Nicolaas Thomas and Maria Elizabeth Reynvaan (see for three sons from this marriage: Biographies 1939-1950).

XVs. Adrianus Antonie Kolff, born Rotterdam 23 Oct. 1868, directeur N.V. Rotterdamsche Zoutziederij v/h Kolff & Vis, deceased Oostkapelle 27 Sept. 1925, married Lübeck 6 Nov. 1894 Luise Johanna Elisabeth Schultz, born Lübeck 14 Oct. 1872, deceased Rotterdam 13 Feb. 1951, daughter of Carl August and Johanna Friederike Wilhelmine Charlotte Hänsel.
From this marriage:
1. Johanna Tonia Kolff, born Rotterdam 27 Oct. 1895, deceased Warmond 6 Feb. 1987, married Rotterdam 25 Nov. 1915 Jhr. Mr. Johan Jacob Eliza van den Brandeler (R.N.L.), born Sassenheim 5 March 1888, jur.dr. Leiden 1912, advocaat and procureur at Zwolle 1912-1923, secretaris directie ENKA at Arnhem 1923-1933, gedel. commissaris 1933-(1938), jur. adviseur N.V. Ned. Kunstzijdefabriek, deceased Velp (Gld.) 26 Feb. 1941, son of Jhr. Martinus and Johanna Adriana Peternella Geertruida Klem.
2. Tonia Adriana Kolff, born Kralingen 24 May 1899, deceased Rotterdam 25 Sept. 1983, married Rotterdam 3 May 1921 Mr. Berthus Joan Karel Kolff (see XVf.3).