Saint Ronald lived in the New Covenant but is not mentioned in either testament of the Bible.
Sarah is a saint's name. She was the wife of Abraham of the Old Testament.
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.
Saint Ronald of Orkney - for more information click on this link.
Joshua is an Old Testament patriarch and not a New Testament saint.
The new testament
Ruth was an Old Testament matriarch and not accorded the New Testament title of 'saint.'
saint peter
The term saint refers to New Testament individuals. I can find no saints who entered heaven after the death of Our Lord named Joshua. There may be many such saints with that name who are known only to God. We do not usually refer to holy people from the Old Testament as saints, although they may be in Heaven.
The title "saint" is usually referred only to personages of the New Testament. Caleb was from the Old Testament. Therefore, he is not a patron saint.
Rachel was an Old Testament Jewish Matriarch. While she is a saint, Old Testament personages are usually not accorded the title of saint.
No, Saint Luke wrote only in the New Testament. "The Gospel according to Saint Luke" and the "Book of Acts".