Mari was born in 1739. Mari's father was Peep and her mother was Ellu. Her paternal grandparents were Peeter and Pabbo. She had three brothers and two sisters, named Juhan, Laur, Evert, Epp and Ell. She had a half-brother and a half-sister, named Toots and Maret. She died at the age of 69 in 1808.