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Parents
- Mathias Mikkelsen Ursin (1755–1837) (Father)
- Marta Maria Pedersdatter (1752–1779) (Mother)
Siblings
- Mikkel Mathiassen Ursin (1785–1861) (Sibling)
- Dorte Brønlund Mathiasdatter Ursin (1786–1878) (Sibling)
- Martha Marie Ursin (1796–1877) (Sibling)
- Nils Olai Ursin (1791–1853) (Sibling)
- Jens Brønlund Mathiassen Ursin (1793–1854) (Sibling)