Mari Grayson

Mari Antonia Grayson (b. October 3rd, 2008) is the daughter of Zatanna Zatara and Dick Grayson, the adopted granddaughter of Bruce Wayne and Tony Stark, and the adopted niece of the other children of the Stark-Wayne Family.
Mari was conceived in the December of 2007, shortly before her parents broke off their short-term relationship due to Zatanna only staying in Gotham for six months. After Dick found out that he was pregnant, shortly before her adopted grandomither, Tony, went missing, he soon decided that he did not want Zatanna to know that he was pregnant or that she had a daughter. This was met with disapproval by his entire family, although they eventually accepted his decision by the time that Mari was born on October 3rd, 2008.
Dick named his daughter after his biological amither, Marenda Grayson, his adopted grandmother Maria Stark, and Tony Stark.