When Johannis Gardenier was born in 1724, in Philipsburg Manor, Westchester, New York Colony, British Colonial America, his father, Jacob Albertse Gardenier, was 41 and his mother, Sarah Jochems Van Wert, was 40. He married Sara Van Tassel on 23 April 1747, in Sleepy Hollow, Westchester, New York Colony, British Colonial America. They were the parents of at least 2 daughters. He died in 1755, in his hometown, at the age of 31.