Which St. David are you talking about? There are several. If you are talking about King David from the Old Testament, the title "saint" is generally reserved to New Testament followers of Jesus Christ.
St. David of Wales was born about the year 542 at Menevia (now Saint David's), Wales. The exact date is not known.
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.
Saint David of Wales died of natural causes, not in battle.
There is no canonized New Testament saint named Jonathan. There is, however, an Old Testament personage by that name who was a contemporary of King David. The title saint is usually only for the New Testament.
David of Wales was about 59 years of age when he died.
king David died in 970 B.C.
He wasn't acclaimed a saint until he was dead, in the Catholic church having the title "saint" means that you have died and gone to heaven. David was approximately 90 years old when he died and entered heaven.
Saint Alexis of Rome died sometime early in the 5th century. The date is not known.
The patron saint of Wales is St David and St david's day is March the first.
No, Saint David was not a martyr. He was a Welsh bishop and the patron saint of Wales, known for his teachings and founding monastic settlements. He is revered for his piety and contributions to the spread of Christianity in Wales.
David died about the year 601 at Mynyw, Wales, of natural causes.
That question is impossible to answer as we have no record of when Anne died.