When Susanna Sinn was born on 2 May 1735, in Frederick, Frederick, Maryland, British Colonial America, her father, Johann Georg Sinn, was 23 and her mother, Anna Catharina Mueller, was 32. She married Johann Caspar Beckenbach about 1752, in Frederick, Frederick, Maryland, British Colonial America. They were the parents of at least 1 son and 9 daughters. She died on 4 October 1835, in Washington, District of Columbia, United States, at the age of 100, and was buried in Washington, District of Columbia, United States.