According to wikipedia, Saint Olivia was born on October 19th in Sicily, Italy, and died sometime in the 9th century.
Please keep in mind wikipedia is not always trustworthy, and it is a good idea to conduct more research before using this information in a school assignment, etc.
Saint Adele has an unknown Birth and Death
The dates of Like's birth and death are not known.
Saint Joshua's date of birth is not known, and there is no widely recognized saint with the name Joshua in Christian tradition. Joshua is a figure from the Old Testament of the Bible.
His birth date is unknown but he was stoned to death in the year AD97.
Saint Christopher's date of birth is not known, but he is believed to have lived in the third century. His death is traditionally accepted to have occurred around the year 250 AD.
Saint Olivia was, according to legend, the beautiful daughter of a noble Sicilian family. But does anyone know EXACTLY where and when St. Olivia was born? Or even when she was made blessed? Or maybe her date of death? Please contribute to this answer if you can.
St. Gabriel is an archangel and was neither born nor will he ever die.
Birthdate tentatively 2 AD died in Roman prison 68 AD
Since we know neither the date of Matthew's birth nor the date of his death, that question can not be answered.
Alban's date of birth is unknown and his date of death is in dispute but occurred in the 3rd or 4th centuries.
We do not know the birth date nor the date of death of St. Patrick. He was just given the date of March 17th for lack of precise information on the actual date. The death date is usually the feast day of a saint because that would be the date they were reborn in heaven.
The feast of Saint David of Wales is on March 1st. Since neither his date of birth or date of death is known, it is not possible to link March 1 with his birthday.