 Rudolf Antonius Johannes Rolf, son of Johannes Swibertus Rolf and Johanna Jacoba van Lingen.Born 1876 Leeuwarden Married 17 Jun 1899 Wymbritseradeel, age 22 or 23 years (married 31 years) to:  Catharina Ydema, age by marriage 27 years, daughter of Sjoerd Harmens Ydema and Grietje Jacobs Hettinga.Born 27 Sep 1871 Idzega, died 16 Apr 1931 Amsterdam, age 59 years, buried Amsterdam | |||