The fingerprint match could put frustrated investigators one step closer to learning the real identity of Rockefeller, who was called a "ghost" by one Boston police investigator, an "enigma" by a FBI special agent and a "mystery man" by Suffolk County, Mass., prosecutors.
Rockefeller is being held without bail at the Suffolk County Jail on Nashua Street in Boston. He was arraigned on kidnapping and assault charges in Boston.
In court Tuesday prosecutors reiterated that Rockefeller had no driver's license, Social Security card, work or educational history or marriage certificate, and they said he has steadfastly refused to tell investigators anything about his upbringing.
Hrones described his client as a "delightful man" who made friends easily, and a doting father who would never harm his daughter. He also took a knock at Sandra Boss, Rockefeller's ex-wife and Reigh's mother, an Ivy league-educated business executive now stationed in London.
"She hardly even knew the child," Hrones said. "He was the stay-at-home dad. She was a busy career woman who worked all the time, traveled all the time."
Hrones said that he would challenge the legality of the custodial kidnapping charge. "They call this kidnapping?" he asked. "You can kidnap your own child?"
When the couple divorced, Boss was given "primary residential custody" of the child. Rockefeller was granted visitations with Reigh under the condition that a social worker supervised them.
It was during one of those visits in Boston that Rockefeller, with the help of two paid but unwitting drivers, executed the first step of an alleged kidnapping plan that has since drawn international attention.
Rockefeller was arrested Saturday in a Baltimore apartment he had recently purchased under the name Charles "Chip" Smith, apparently with the intention of starting a new life there with his daughter.