David married Miriam Clarke Mason in June 1809. They had nine children, all born in Boston.
About 1820, he purchased 200 acres outside of Boston,now known as Longwood in Brookline. Here, he laid out a community and had Christ Church built, the basement of which contained a crypt for his own burial and those of his loved ones.
Miriam Clark Mason Sears
1789–1870 (m. 1809)