Abigail, the Old Testament matriarch, is not accorded the title of saint. That is reserved for those who died after the birth of Our Lord. Her feast day is September 1. There is another saint named Gobnata (Irish for Abigail) who has a feast on February 11.
February 11th. The patron Saint of bee keepers
The feast day of Saint Apollonia of Alexandria is on February 9.
The feast day on the 21st of September is for Saint Matthew the Apostle and Evangelist. He was a tax collector before being called by Jesus to become one of his apostles. Saint Matthew is the author of the Gospel of Matthew in the New Testament.
There is no saint named Isabel with a feast day of September 1.
His feast day is September 28.
September 29th is the feast day of the archangels.
February 6 is her feast day-- the day she was put to death.
The feast day of St. Scholastica is on February 10th. She is the twin sister of St. Benedict and was a nun who founded the women's branch of the Benedictine order.
The feast day of Saint Matthew the Apostle is on September 21.
The feast of Saint Blaise is on February 3 and is usually observed with a blessing of the throats.
There are hundreds of saints with feast days in February but the best known was probably St. Valentine of Rome who has his feast on February 14.
February 27 is Anne Lyne's feast day.