Family Group Sheet| FATHER | | Pier Gerrits Leffertstra | | BIRTH | 17 April 1843 | Wyckel | | REF # | | 15999; | | FATHER | Gerrit Piers Leffertstra | | MOTHER | Hiltje Stoffels Stoffelsma | | | | MOTHER | | Aaltje Jans Koopmans | | BIRTH | 1850 | Delfstrahuizen | | REF # | | 16000; | | FATHER | Jan Wiebrens Koopmans | | MOTHER | Jantje Fokkes Wind |
| | | CHILDREN | | 1. | Gerrit Leffertstra MALE | | | BIRTH | 22 June 1877 | Sloten | | REF # | | 22617; | | MARRIAGE | 14 May 1908 | Hitje Sierdsma; Schoterland |
| | 2. | Jantje Leffertstra1 FEMALE | | | BIRTH | 10 February 1879 | Dolsterhuizen, Schoterland, Friesland, Netherlands1 | | DEATH | 27 January 1943 | Smallebrugge, Doniawerstal, Friesland, Netherlands1 | | RECORD CHANGE | 9 September 2006 | 1 | | REF # | | 16267; | | MARRIAGE | 8 May 1902 | Roelof FALKENA; Balk, Gaasterland, Friesland, Netherlands1 |
| | 3. | Hiltje Leffertstra FEMALE | | | BIRTH | 17 May 1882 | Schoterland | | REF # | | 22615; |
| | 4. | Jan Leffertstra MALE | | | BIRTH | 1886 | Elahuizen | | REF # | | 22618; | | MARRIAGE | 5 January 1918 | Eelkje Posthumus; Aengwirden |
| | 5. | Stoffel Leffertstra MALE | | | BIRTH | 28 December 1891 | Schoterland | | REF # | | 22616; |
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