Complex sentence: When the time came for her to be bethrothed her parents decided the groom should marry into their family which was a common practice at the time and meant her husband would come and set up home in her family's house.
Split into simpler sentences: When the time came for her to be bethrothed, her parents decided the groom should marry into their family which was a common practice at the time. This meant that her husband would come and set up home in her family's house.