Los Angeles, Jan 13 (Ians) Actress Julia Roberts was stunned to find out she isn’t actually a ‘Roberts’ after all.

The 55-year-old actress has discovered more about her family tree and, through genealogical work and DNA archives, she’s learned her surname is totally different because her great-great-grandmother Rhoda Suttle Roberts had an affair with a married man following the death of her husband Willis Roberts, reports aceshowbiz.com.

On Ancestory’s “Finding Your Roots”, Dr Henry Louis Gates Jr told her, “Digging into Georgia’s County archives, we discovered that sometime in the 1850s, Rhoda married a man named Willis Roberts.

Julia carries Willis’ last name. But Willis passed away in 1864, over a decade before Rhoda gave birth to Julia’s great grandfather, John, leading to an inescapable conclusion.”

Although Willis isn’t listed in the 1880 census, her great-grandfather John Pendleton Roberts is in the archives. The historian said,...