I am researching my Great Grandfather Jakob Robert Jucker born Rapperswil Canton Sank Gallen 29.2.1852. I know his mothers name Maria Barbara Theresia Rigoleth, but would be really interested to find out more about his father and his two sisters Louise and Rosine Wilhelmine. I would like to find out if there are any decendants of his sisters. Louise married Jon Ludwig Keller and Rosine Wilhelmine a Johann Oswald Roellin.
Can anyone help with my research.
THANKYOU