The Long Journey of Gracia Mendes - Marianna D. Birnbaum - Google Books

https://books.google.de/books?id=YpIcnQnRSAcC&pg=PA109&dq=Jacob+ben+Joseph+Tawus#v=onepage

The historical biography of a true Jewish heroine in her day, Gracia Mendes. Born in 1510 in Portugal, the book details this woman's extraordinary personality until her death in 1569 in Constantinople (today's Istanbul). Her life exemplified a perseverance…