Ancestor Score 2020: 79.7% in the 10th generation

Inspired by the Ancestor Score - also called "Completeness Statistics" - of other blogs, and GeneaNet's definition, I generated my first one in February 2016. Since then I haven't just been able to increase my score, I also had to remove a whole line of wrong ancestors***. I could partially replace them by already existing ancestors - due to inbreeding among my ancestors, which didn't increase the score either. Therefore, I decided to generate a new in-between ancestor score in August 2018 to be able to continue this series of posts. Thus, in February  2019 I was able to continue with my Ancestor Score Series.

Geneanet defines the Ancestor Score as 

“comparing the number of possible ancestors with 

the number of identified ancestors on a 10-generation report”. 

My Ancestor Score at generation 10 in the period 1600-1740 is 79.7%. It will never reach the 100%, because some cousins intermarried in generation 7. The total number of my “known” ancestors - starting with my parents (generation 2) - is currently 4618.

Composition and Bandwidth of various Generations
	Composition							Bandwidth**
Generations	Men	Women	Total	% 2020	% 2019	% 2018*	% 2016	From	Until
G 3	2	2	4	100.0	100.0	100.0	100.0	1892	1906
G 4	4	4	8	100.0	100.0	100.0	100.0	1850	1880
G 5	8	8	16	100.0	100.0	100.0	100.0	1804	1857
G 6	16	16	32	100.0	100.0	100.0	100.0	1756	1832
G 7	30	30	60	93.8	93.8	93.8	93.8	1724	1802
G 8	59	59	118	92.2	92.2	92.2	90.6	1680	1777
G 9	115	113	228	89.1	89.1	88.3	86.7	1645	1750
G 10	207	201	408	79.7	79.5	78.7	76.4	1600	1740
G 11	330	303	633	61.8	61.2	60.8	57.0	1560	1695
G 12	420	360	780	38.1	37.6	37.3	33.8	1510	1695
G 13	438	322	760	18.6	18.1	17.9	15.7	1505	1670
G 14	356	240	596	7.3	7.0	7.1	6.1	1440	1625
G 15	231	132	363	2.2	2.0	2.0	1.6	1440	1580

     *) All years feature an ancestor score of February, except for the August score of 2018 and a January score for this year.
   **) The Bandwidth of a generation is determined by the earliest and latest known birth or baptism date within that generation.
  ***) I have many ancestors in places like Sint Anthoniepolder, 's-Gravendeel, Wieldrecht and Hendrik-Ido-Ambacht, where pre-1800 baptism records are missing. 

The most common surnames among my ancestors are Van Driel, Oerlemans, Spruijt, Brand, Bos, Van der Giessen, De Jong, Van der Linden and Smits. The surnames De Jong, Bos and Smits are in the Top 25 of most common surnames in The Netherlands. The most common male given names among my parents are typically Dutch names like Jan, Cornelis, Pieter, Willem and Adriaan. The most common female given names are Adriana, Maria and Elisabeth.

The most common places of origin of my ancestors are Dordrecht, Sprang-Capelle, Sint Anthoniepolder, Ridderkerk, Strijen, Streefkerk, 's-Gravendeel and Dubbeldam. The most common known occupations are laborer and farmer.

Arij Peijensz Hoogerwaert and Trijntje Willem Cornelisdr. (±1635-1709) had 16 children together. Jan Ariensz Hoogvliet and his wife Barbara Leenderts Kooijman (±1755-1802) had 15 children baptised in Cillaarshoek, Holland. Jannigje Thomasse Brullee (±1684-1747), wife of Joost de Bondt, gave birth to 14 children. This couple was married for 43 years. Neeltjen Claes Bloet (±1640-1727) and Gerrit Maertensen Korver were married for 66 years. Among my ancestors are 2 men who married 5 times: Pieter Huigen Blaak and Crijn Jans Tuck who both lived around 1700.