Go to the Patron Saint Index (Click this link). From that page you can choose to search under each individual saint's name (Alphabetical List of Saints) or you can click on the Patronage List and view the various patronage topics and patron saints of each. There is also the Calendar of Saints where you can check out each day of the year to see which saints are memorialized on each date. The lists of options are found in the column on the right hand side of the page.
I can find no patron saint named Florence.
Saint Brice is the patron saint against stomach disorders.
st.victoria is a patron saint of cardoba spain.
I can find no official patron saint of chocolate.
Saint Ryan (or Rian or Rhian) apparently is not a patron saint as I find no patronages list for him.
I can find no referrence to any saint who would be the patron saint of either history or historians.
I can find no saint named Siobhan.
I find no saint named Eva but Saint Eve of Dreux is not a patron saint. Little is known about her except that she was a martyr.
I can find no saint named Abbie. There is Abigail the Matriarch from the Old Testament but she does not hold the title of saint and is not a patron saint.
The closest I can find is St Bernard of Menthon who is the patron saint of mountaineers.
I can find no named saint with the name Laine. Perhaps try your middle name or your date of birth to find a patron saint.
I can find no canonized saint by that name.