He was never canonized as he was declared a saint by the early Christians 1100 years before the canonization process was fully instituted. Traditions hold he was a martyr but there is no verification of this.
No, he is not a canonized saint.
Edward was canonized in the year 1161 by Pope Alexander III.
St. Clare of Assisi was canonized on September 26, 1255, by Pope Alexander IV.
Francis was canonized on April 19, 1665, by Pope Alexander VII.
John of God as canonized on October 16, 1690, by Pope Alexander VIII.
Saint Teresa of Avila was canonized by Pope Gregory XV on March 12, 1622.
Saint Clare of Assisi was canonized on September 26, 1255, by Pope Alexander IV in Rome.
Pope Alexander IV canonized Clare in 1255, just 2 years after her death.
St. Clare of Assisi was canonized on September 26,1255, by Pope Alexander IV in Rome, Italy.
It means that Rome has investigated his life thoroughly and the pope is declaring that he is indeed in Heaven.
Two years after her death (August 11th, 1253) Pope Alexander IV canonized her (1255).
John was canonized on October 21, 1666, by Pope Alexander VII (cultus confirmed).