be in (one's) blood

To be innate, as of a skill or quality. All of my relatives are doctors—medical prowess is just in our blood.

Name	Pronounced	Usage
Merlin	MUR-lin (English)	Arthurian Romance, English
Ersilia	er-ZEEL-yah	Italian
Derya	-	Turkish
Liliane	-	French
Yair	-	Hebrew, Biblical Hebrew
Peachey	['pi:tʃi]