Dear Pani Rose,
We have a huge Latin Church here dedicated to St Rose of Lima - my wife's cousin is also "Rose!"
While there are women saints named "Rose" as Hritzko says, the name ultimately derives as a reference to the "Rose of Sharon" or the Mother of God.
What is fascinating is the number of flowers we have that are named for the Virgin Mary.
For example, "Lady's Mantle" is actually named for "Our Lady's Mantle" of Protection!
Jonquils, Lilies etc. And even "Mary's Tears" now known as "Job's Tears."
I have an icon of the Mother of God "The Enclosed Garden" in my backyard garden.
A Rose by any other name . . .
Alex