Complex sentence: In Einbeck, Waldeck met Anna Polmann (1505--1557), the daughter of local linen weaver, Barthold Polmann, with whom he lived from 1523/24 in a marriage-like relationship, having eight children with her; four sons and four daughters.
Split into simpler sentences: In Einbeck, Waldeck met Anna Polmann (1505--1557), the daughter of local linen weaver Barthold Polmann. They lived from 1523/24 in a marriage-like relationship, having eight children: four sons and four daughters.