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Robert KALKMAN

b.
p.
d.
p.

Willem KALKMAN

b. 4 Nov 1928
p. Den Helder, , Noord-Holland, Netherlands
d. 17 Jul 2017
p. Den Helder, , Noord-Holland, Netherlands

Willem KALKMAN

b. 20 Jul 1893
d. 2 Mar 1949

Johannes KALKMAN

b.
d.

Johanna KRUIJNE

b.
d.

Anna Carolina Elisabeth BERKELJON

b. 13 Jul 1897
d. 15 Aug 1952

Johan Adam BERKELJON

b. 21 Apr 1864
d. 12 May 1939

Johannus Baltus BERKELJON

b. 14 Nov 1833
d. 14 Mar 1903

Trijntje GUTTER

b. 22 Dec 1833
d. 23 Dec 1906

Johannetta Sophia BUIS

b. 25 Apr 1864
d. 19 Mar 1923

Cornelis Jansz BUIJS

b. 1832
d.

Anna Caroline Elisabeth VISSER

b. 1840
d.

Joan ZIPP

b.
p.
d.
p.

Jan ZIPP

b. 1900
d. 1982

Jan ZIPP

b. 19 Feb 1872
d. 8 Jan 1959

Jan ZIPP

b. 1850
d. 19 Jul 1904

Dieuwertje BEEK

b. 1850
d. 23 May 1920

Maria PRINS

b. 21 Mar 1878
d. 5 Feb 1954

Willem PRINS

b. 1856
d. 24 Mar 1917

Geertje VOLTEN

b. 1852
d. 26 Mar 1921

Pieternella Johanna VEER

b. 1907
d. 1974

George Christiaan VEER

b. 1868
d. 25 Nov 1950

Johannes VEER

b. 1842
d. 15 Oct 1912

Geertje MOLENAAR

b. 24 Dec 1845
d. 8 Jan 1918

Neeltje HORN

b. 1872
d. 3 Jan 1950

Cornelis Jacobus HORN

b. 1833
d.

Neeltje ZUIDEWIND

b. 1834
d.

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

(5/7) 71%

3

(14/14) 100%

4

(23/28) 82%

5

(38/56) 67%

6

(48/112) 42%

7

(46/224) 20%

8

(43/448) 9%

9

(48/896) 5%

Tot:

(265/1785) 14%

People

2

(2/2) 100%

3

(4/4) 100%

4

(8/8) 100%

5

(12/16) 75%

6

(24/32) 75%

7

(24/64) 37%

8

(18/128) 14%

9

(20/256) 7%

Tot:

(112/510) 21%

Birth Dates

2

(1/2) 50%

3

(4/4) 100%

4

(6/8) 75%

5

(12/16) 75%

6

(12/32) 37%

7

(9/64) 14%

8

(12/128) 9%

9

(15/256) 5%

Tot:

(71/510) 13%

Marriage Dates

2

(1/1) 100%

3

(2/2) 100%

4

(3/4) 75%

5

(6/8) 75%

6

(6/16) 37%

7

(4/32) 12%

8

(6/64) 9%

9

(4/128) 3%

Tot:

(32/255) 12%

Death Dates

2

(1/2) 50%

3

(4/4) 100%

4

(6/8) 75%

5

(8/16) 50%

6

(6/32) 18%

7

(9/64) 14%

8

(7/128) 5%

9

(9/256) 3%

Tot:

(50/510) 9%