!BIRTH Parish Register, Vinderslev, Viborg, Danmark 1771-1819 (LDS microfilm #53822), corroborated by Census 1834, 1845, 1850 Voer, Vinderslev, Viborg, Danmark (Dansk Rigsarkiv, Dansk Demografisk Database)

Was 31 on 1845 Census (Dansk Rigsarkiv, Dansk Demografisk Database)
Was 37 on 1 Feb 1850 (1850 Census, Vinderslev, Viborg, Danmark, LDS microfilm #39363).

!MARRIAGE Parish Register, Vinderslev, Viborg, Danmark, 1832-1867 (LDS microfilm #53826)

!DEATH Parish Register, Vinderslev, Viborg, Danmark, 1883-1891, p. 288 (Dansk Rigsarkiv, Arkivalieronline.dk), “Gaardmand i Voer, gift”, “69 år gl”.

At time children were being born lived at "Gråskov".
All children alive & living with parents on 1860 Census, Vinderslev, Viborg, Danmark (Dansk Rigsarkiv, Arkivalieronline.dk)

——

Evidence Linking this Jens Madsen to Maren Jensen:
√with this birthdate he would be 36 at time of his marriage in June 1840
√he is the only Jens Madsen born in Voer between 1810-1815
√he lives with his family (unmarried) on the 1834 and 1840 Census, which usually took place in February. He married in June of 1840.
√1845 Census says he was “født i sognet”
√many of his siblings show up on the birth records of his children

Possible Siblings: √Marie Kirstine Madsdatter (Skræ), √Jacob Madsen (Hvam), √Morten Madsen (Holmstykke-Mausing), √Peder Madsen (Resen), √Willads Madsen (Serup). (Found on christening records of his children.)