Complete the following sentence: During the latter half of the 15th century,
️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ 1471, the Yorkists defeated their rivals in the battles of Barnet and Tewkesbury.<unk>1471, the Yorkists defeated their rivals in the battles of Barnet and Tewkesbury. The Lancastrian king, Henry VI of England and his only son, Edward of Westminster, died in the aftermath of the Battle of Tewkesbury.<unk> The Lancastrian king, Henry VI of England and his only son, Edward of Westminster, died in the aftermath of the Battle of Tewkesbury. ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą ️<unk>️<unk>️<unk>️<unk>️ He attacked those who refused to submit to his rule, such as Jasper Tudor and his nephew Henry Tudor (later King Henry VII of England), naming them as traitors and confiscating their lands.