Harm Leeuwerke was born on Thursday 23 May 1912 in Oude-Pekela, Netherlands.

Harm married Betty Perrott in 1939 in the Llanelly Registration District (Sep. quarter).

He had the following children from his marriage to Betty Perrott:

- Bryan Harm Leeuwerke	born in 1940 (date suppressed) in Llanelly, Carmarthenshire, Wales.
- Male Leeuwerke
- Maria Leeuwerke	born in 1946 (date suppressed) in Llanelly, Carmarthenshire, Wales.
- Michael Stewart Leeuwerke	born on 8 August 1948 in Llanelly, Carmarthenshire, Wales.
- Roberta Anna Leeuwerke	born in 1954 (date suppressed) in Llanelly, Carmarthenshire, Wales.

Details of Harm's occupation are not known.

Harm died when he was 61 years old, on Thursday 21 February 1974 in Llanelly, Carmarthenshire, Wales.  

Notes - Sources of information:

1.	Birth and death information provided by Renate Leeuwerke.