Years supposition.
Perhaps Evelina Catharina Rittner Bos (1884-?), married in 1902 to Willem Petrus van Rijkom? jdgjan14
Rittner Bos, Mej. (E.?)
E. Rittner Bos (M? V?) translated from the Spanish. svd jan. 2006. -> But (translated) work shows she translated from Italian? jdgjan14