There are tens of thousands of saints, too many to list here. However, the Patron Saint Index lists many of the saints and there patronages.
No, just saints as saints are patrons prophets are not there for they cannot be your patron
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There are no particular saints who are patrons of kindness - male or female. All the saints were kind in one way or another so take your choice.
Patrons for a holy death•Andrew Avellino•Christopher•Joseph•Michael the Archangel•Ursula
There are many saints named Margaret. Please be specific.
There are no patron saints of gunshots. There are patrons of gunners and gunsmiths, however.
Patrons saints of the Archdiocese of Philadelphia, Pennsylvania:Immaculate ConceptionPaul the ApostlePeter the Apostle
There are no patron saints of volcanoes. There are two patrons, however, against volcanic eruptions: patrons against volcanic eruptions •Agatha •Januarius
The patron saints of nurses are:AgathaAlexiusCamillus of LellisCatherine of AlexandriaCatherine of SienaJohn of GodMargaret of AntiochRaphael the Archangel
There are no patron saints for the general term of healing. However, there are patrons for specific maladies.
There are no patron saints of dermatologists but there are patrons against skin diseases:Anthony the AbbottGeorgeMarculfPeregrine LaziosiRoch
St. Peregrine is the Patron Saint of all cancers, but I don't know who is specifically for Ovarian Cancer. Patrons against all forms of cancer •Aldegundis •Ezekiel Moreno •Giles •James Salomone •Peregrine Laziosi