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Willem NIEROP

b.
p.
d.
p.

Johan Pieter NIEROP

b. 1908
p. Midwoud, , Noord-Holland, Netherlands
d. 1989
p. Hoorn, , Noord-Holland, Netherlands
4 Oct 1934

Willem NIEROP

b. 3 Dec 1882
d. 17 Nov 1951

Jan NIEROP

b. 18 Jul 1846
d. 1 Jul 1888

Dirk NIEROP

b. 27 Jan 1812
d. 15 Oct 1904

Christina van ZADEL

b. 2 Feb 1813
d. 29 Jul 1852

Maartje BLOKKER

b. 5 Aug 1855
d. 19 Oct 1936

Willem BLOKKER

b.
d.

Maartje VADER

b.
d.

Anna BLOKKER

b. 24 Jun 1882
d. 6 Jun 1959

Pieter BLOKKER

b.
d.

Antje BEEKMA

b.
d.

Sara Maria van KLAVEREN

b. 1910
p. Nieuwer Amstel, , Noord-Holland, Netherlands
d. 2001
p. Bovenkerk, , Noord-Holland, Netherlands
4 Oct 1934

PIKWA - Performance Indicator Kwartierstaat

These Charts show the relative state of completion of an individual's Pedigree Chart. It compares the number of vital statistics currently found to the total required to fill ten generations out from the chosen person.

The PIKWA concept was developed by Otto P. van Driel in The Netherlands.
Adapted to our Pedigree Charts by Rob Vanderplas

Combined

2

(6/7) 85%

3

(7/14) 50%

4

(9/28) 32%

5

(9/56) 16%

6

(9/112) 8%

7

(10/224) 4%

8

(9/448) 2%

9

(5/896) 0%

Tot:

(64/1785) 3%

People

2

(2/2) 100%

3

(2/4) 50%

4

(4/8) 50%

5

(4/16) 25%

6

(4/32) 12%

7

(4/64) 6%

8

(4/128) 3%

9

(3/256) 1%

Tot:

(27/510) 5%

Birth Dates

2

(2/2) 100%

3

(2/4) 50%

4

(2/8) 25%

5

(2/16) 12%

6

(2/32) 6%

7

(3/64) 4%

8

(2/128) 1%

9

(1/256) 0%

Tot:

(16/510) 3%

Marriage Dates

2

(0/1) 0%

3

(1/2) 50%

4

(1/4) 25%

5

(1/8) 12%

6

(1/16) 6%

7

(1/32) 3%

8

(1/64) 1%

9

(0/128) 0%

Tot:

(6/255) 2%

Death Dates

2

(2/2) 100%

3

(2/4) 50%

4

(2/8) 25%

5

(2/16) 12%

6

(2/32) 6%

7

(2/64) 3%

8

(2/128) 1%

9

(1/256) 0%

Tot:

(15/510) 2%