Ancestor Score 2019 - a new begin

Inspired by the Ancestor Score of other blogs, I generated my own in February 2016. Shortly after posting it, I had to remove several wrong ancestors, decreasing my score. Later that year I was happy to find more new ancestors to compensate for the loss. 
In August 2018, however, I had to remove a whole load of wrong ancestors*** that were partially replaced by already existing ancestors - due to inbreeding among my ancestors. Thus, my ancestor score had been decreased forever. Therefore, I decided to create a new 2018 ancestor score in August (replacing the one in February) to be able to continue this series of posts.

Now it's time for a new Ancestor Score post! 

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 1600-1722 is 79.5%. 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 now 4520. 

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.

My great-grandparents
Pieter Klootwijk & Adriana Brand 

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

Beatericx Wouters Roothals (±1595-1653) and Jan Dericxsen Antonissen van Nederveen are unique ancestors for having had a triplet. My own mother was born as one of twins. 
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. My great-grandparents Pieter Klootwijk (1875-1964) and Adriana Brand (1880-1965) were married for 61 years. 

Composition and Bandwidth of various Generations
	Composition						Bandwidth**
Generations	Men	Women	Total	% 2019	% 2018*	% 2016	From	Until
G 3	2	2	4	100.0	100.0	100.0	1892	1906
G 4	4	4	8	100.0	100.0	100.0	1850	1880
G 5	8	8	16	100.0	100.0	100.0	1804	1857
G 6	16	16	32	100.0	100.0	100.0	1756	1832
G 7	30	30	60	93.8	93.8	93.8	1724	1802
G 8	59	59	118	92.2	92.2	90.6	1680	1777
G 9	115	113	228	89.1	88.3	86.7	1645	1749
G 10	207	200	407	79.5	78.7	76.4	1600	1739
G 11	326	301	627	61.2	60.8	57.0	1565	1695
G 12	414	356	770	37.6	37.3	33.8	1538	1695
G 13	428	315	743	18.1	17.9	15.7	1505	1670
G 14	347	232	579	7.0	7.1	6.1	1440	1625
G 15	212	117	329	2.0	2.0	1.6	1440	1580
G 16	121	71	192	0.6	0.6	0.5	1395	1540
G 17	72	31	103	0.2	0.2	0.1	1365	1485
G 18	45	24	69	0.1	0.1	0.0	1335	1470
G 19	36	13	49	0	0	0	1310	1440
G 20	21	10	31	0	0	0	1300	1385

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