Marriage roles of the Tiwi plays an important role for economic, social and political status. The Tiwi consider marriage as a very important aspect of their livelihoods, as almost all people get married, especially women. Tiwi culture places great emphasis on the importance of marriage in women's lives. Since both the men and women come from a matrilineal descent group, wives descent group is important. Remarriage of a widow is common for the traditional Tiwi, which allows the less promising hunters to be married. This is because widows have to remarry quickly, which had to be immediately after the husband dies. A marriage occurs at a gravesite of the previous husband, at the tomb (Culture Sketches, 238). Since the more promising husbands are usually claimed, older women often end up with younger, less experienced men (Culture Sketches, 239). is often used in the Tiwi culture, which is the main way of receiving young wives. Successful men, usually older men often had many wives, even up to 20 for very promising husbands (Culture Sketches, 239). Men younger than 30 often had fewer or no wives. In traditional Tiwi culture, ages 30–40 were the most likely to be married to widows (Culture Sketches, 239). Older women had great importance in the society, mainly because the necessity of food in Tiwi society. The older woman know all the gathering skills, making food not be a problem for the household. On the other hand, less experienced woman created problems for the household, as they have less food. Younger women often were like apprentices, learning all the possible ways of gathering from older women to please their husband or household (Culture Sketches, 240). Even though this traditional marriage culture is still very prevalent in modern Tiwi culture, marriage has changed juristically recently because of Catholic missionaries beginning to settle on Tiwi land after the 1945. According to culture sketches, the power dynamic of men and women both had their advantages. While men had a lot more political power, women were well respected for their gathering skills to provide food and favors (Culture Sketches, 240).