Aaltje van Eerde was born on 9 December 1834 in Vollenhove. Her parents were Peter van Eerde, a farmer and Hendrika Kelder. Both of her grandmothers were married to one man - Klaas Post (1784-1865). After his first wife died, he married Aaltje's paternal grandmother Aaltje Dikken (1776-1836). Two years after she died, he married Aaltje's maternal grandmother Agnes Zandbergen (1785-1849).
Aaltje was the eldest surviving child of Peter and Hendrika. She had an older sister who was stillborn and five younger siblings: Agnes (1836-1878), Grietjen (1838-aft1915), Jan (1840-1894), Jan Pieters (1842-1900) and Dagien (1844-1932).
Hendrika died on 7 January 1846 aged 35. Peter remarried to Hendrikjen Regelink on 26 October 1855. This marriage provided Aaltje with three half-siblings: Peter (1856-1933), Idigje (1858-1922), Arrien (1861-1865), Albert (1864-1866), Albertje (1866-1922) and Aaltje (1870-1938), as well as a step-brother, Lute Lok (1852-1918).
Peter van Eerde died on 13 September 1883 aged 78 and Hendrikjen died on 21 February 1915 aged 89.
On 4 September 1857 Aaltje married Marten Scheer in Vollenhove. Marten was a farmer from a long-standing farming family in Vollenhove. Aaltje and Marten had eleven children: six sons and five daughters, including a stillborn daughter. They lived in Steenwijkerwold before moving to Weststellingwerf, Friesland.
Aaltje and Marten remained in Weststellingwerf in their later years, where Marten worked as a farmer. In September 1907 the couple celebrated their fiftieth wedding anniversary. Marten died on 6 January 1908 aged 75. Aaltje lived only seven more weeks, passing away on 25 February aged 73.