Flesh and blood

This idiom for a member of one's family or a close relative, is first cited in the New Testament, Ephesians 6-12. Flesh and blood can also be used to signify the human race. It has been In general use in English from at least the 12th century. Flesh and blood is also British slang for the beverage, brandy and port in equal quantities, first cited from c. 1825, but now virtually obsolete.