incumbent on

Also, incumbent upon. Imposed as an obligation or duty on, obligatory for. For example, He felt it was incumbent on us all to help the homeless. [Mid-1500s]

Common Names:

Name	Pronounced	Usage
Lucilla	[lu:'si:lə]
Niv	-	Hebrew
Ximun	-	Basque
Adonis	ə-DAH-nəs (English), ə-DO-nəs (English)	Greek Mythology
Biddy	BID-ee	Irish, English
Katharine	['kæθərin]