The two rival families in the Wars of the Roses were the House of York and the House of Lancaster. Both families were branches of the royal Plantagenet house and were fighting for the throne of England. The conflict ended when Henry VII of the House of Lancaster established the Tudor dynasty.
The answer to your question is that the two rival families who fought in the Wars of the Roses were the House of York and the House of Lancaster.
In the explanation of this conflict, it's important to note that these two powerful families were both branches of the Plantagenet royal house in England. The Wars of the Roses, which lasted from 1455 to 1487, occurred because both families were in a dispute over the right to the throne of England. The House of Lancaster was associated with a red rose emblem, while the House of York was associated with a white rose, hence the name 'Wars of the Roses'.
Thus, the extensive and bitter struggle between the House of York and the House of Lancaster led to political instability and civil war. It eventually ended when a member of the House of Lancaster, Henry VII, established the Tudor dynasty, symbolizing the reconciliation of the two houses.
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