Alexander Isaac was a son of Isaac Isaac and Bernardina Pino. He was married to Sara de Bruin in Amsterdam on April 27, 1904. Addition of a visitor of the website
Alexander Isaac and Sara de Bruin had at least two children. Their son Josephus Isaac lived at the Pretoriusplein in Amsterdam. His sister Bernardina Isaac lived with her family in the Thérese Schwartzstraat in Amsterdam. Addition of a visitor of the website