Sentence:  St. Patrick is the <WSD>patron saint</WSD> of Ireland; St. Isidore is the <WSD>patron saint</WSD> of software engineers; and St. Anthony is the <WSD>patron saint</WSD> of travelers and finding lost things. 
Meaning of the word marked with <WSD> tags:  A saint conceived as the patron (protector or supporter) of a particular place, group, or activity.