Hi,
I think I have said I don't really have a lot on Johannes Isaak,
all I know is he married Rosina Gust, Dob unknown but guess it to be in the 1860's.
I think they were both born in Bessarabia, probably Katzbach.
Rosina was my G Grandfather's sister,
their parents were
Samuel Gust, Dob 6 Feb 1831 in Katzbach
Rosina Kleihs, Dob 5 Apr or May 1834 in Katzbach.
Thats all I have, but it would be very interesting to find out more about them, and if there is any distant relations.
I live in the UK and all info I am finding out is on line.
Sincerly Pat.