The following teasor is from an article posted at bookerrising.net. There’s no documentation with the article, but it might make for a starting point for those that are interested.
As the toxicology reports are close to being released about her unexpected death, here are some genealogical facts about her:
— Whitney Elizabeth Houston was born in Newark, New Jersey to John Houston and Emily “Cissy” Houston. Her father was an Army veteran and entertainment executive. Her mother Cissy Houston (née Drinkard) was one of the most famous backup singers in her prime, singing backup for Aretha Franklin, Mahalia Jackson, and Elvis Presley among others.
Contrary To Media Reports & Family Claims, She Isn’t Of Documented Partial Italian, Dutch, Or Native American Ancestry
— Media claims that Whitney Houston is of partial Italian ancestry (through her mixed-race father) are currently not backed up by a genealogical paper trail. Her father’s family tree on both sides goes back to the 1760s-1850s, long before Italians started emigrating en masse to the U.S..
I found the wikipedia article on Whitney Houston also interesting.