Catharina Anna Maria Marchand - Consistentie controle

Not the only problem.

Catharina Sidonia Marchand death date and location are an exact match for her sister's death date and location Catharina Sidonia Marchand

One explanation could be that the death date of Catherine (b 1806) has been transposed to Catherine (b 1864). If so then the younger Catherine is also generationally incorrect as their father Joannes Baptista Marchand died in 1856 so cannot actually be her father at all if her date of birth is correct.