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Jacob Willems BERKHEIJ

b. 1713
p. Katwijk aan de Rijn, , Zuid-Holland, Netherlands
d.
p.

Willem Ijsbrandsz BERKHEIJ

b. 1690
p. Katwijk aan Zee, , Zuid-Holland, Netherlands
d.
p.
15 Apr 1710

Ijsbrant Willems BERKHEIJ

b. 1662
d.

Willem Isbrantsz BERKHEIJ

b. Abt 1623
d. Bef 1683

Neeltje Dirks HARPERT

b.
d.

Lisbeth JANS

b.
d.

Aafje Claas van der PLAS

b. 15 Aug 1694
p. Katwijk aan Zee, , Zuid-Holland, Netherlands
d. 14 Jan 1776
p. Katwijk, , Zuid-Holland, Netherlands
15 Apr 1710

Claes Buijser van der PLAS

b. 1662
d. 5 Nov 1725

Buijsert Krijne van der PLAS

b. 1630
d. Abt 1700

Crijn Jansz van der PLAS

b. 1610
d.

Lijsbeth Cornelisdr

b. 1610
d.

Pietertje Claes

b. 1630
d. 1662

Neeltje Cornelis KEUS

b. 22 Mar 1663
d. Abt 1708

Cornelis Lenndertsz KEUS

b.
d.

Aafje Lenndertsdr KROON

b.
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

(6/7) 85%

3

(10/14) 71%

4

(12/28) 42%

5

(4/56) 7%

6

(6/112) 5%

7

(6/224) 2%

8

(2/448) 0%

9

(0/896) 0%

Tot:

(46/1785) 2%

People

2

(2/2) 100%

3

(4/4) 100%

4

(6/8) 75%

5

(2/16) 12%

6

(2/32) 6%

7

(2/64) 3%

8

(1/128) 0%

9

(0/256) 0%

Tot:

(19/510) 3%

Birth Dates

2

(2/2) 100%

3

(3/4) 75%

4

(3/8) 37%

5

(2/16) 12%

6

(2/32) 6%

7

(2/64) 3%

8

(1/128) 0%

9

(0/256) 0%

Tot:

(15/510) 2%

Marriage Dates

2

(1/1) 100%

3

(1/2) 50%

4

(0/4) 0%

5

(0/8) 0%

6

(0/16) 0%

7

(0/32) 0%

8

(0/64) 0%

9

(0/128) 0%

Tot:

(2/255) 0%

Death Dates

2

(1/2) 50%

3

(2/4) 50%

4

(3/8) 37%

5

(0/16) 0%

6

(2/32) 6%

7

(2/64) 3%

8

(0/128) 0%

9

(0/256) 0%

Tot:

(10/510) 1%