The researchers carried out more extensive mtDNA analysis, and this time also sequenced the HVS2 region, which positively confirmed that the unknown remains are Goodwin's.
According to Parr, the test gave "98 percent certainty the identification is correct," Live Science reports.
"The case demonstrates the benefit of targeted mtDNA coding region typing in difficult forensic cases, and highlights the need for entire mtDNA sequence databases appropriate for forensic use," Parr and colleagues write.
The youngest of a family of eight who all died in the disaster, Goodwin was a third-class passenger traveling from Fulham, England, to Niagara Falls, N.Y.
His sad story begins when his father Fred, a 42-year-old electrician, sought out a better life by moving himself and his family to Niagara Falls, where a power station was about to open.
The family suffered the worst of luck. They had booked passage on a small Southampton steamer, but the trip was canceled because of a coal strike.
They were then transferred to the "unsinkable" luxury liner for her maiden voyage.