Rick Harrison obtained a name from 2 of Donald Trump‘s sons after his personal son, Adam Harrison, died from a fentanyl overdose.

A rep for the “Pawn Stars” patriarch tells TMZ … Donald Jr. and Eric Trump reached out to Rick after studying of Adam’s dying. We’re advised the Trumps spoke to Rick on the cellphone to supply their condolences.

The Trump and Harrison households have an extended relationship. Rick’s been a vocal supporter of the previous president for years — at one level referring to himself as a “Trump man.”

When DT was within the White Home, he and Rick met in September 2018 … snapping a photograph along with Rick’s youngest son, Jake.

Even earlier than the cellphone name, Don. Jr commented on Rick’s tribute publish to Adam, “I am so sorry man.”

TMZ broke the story … Adam died final week from a drug overdose.

Rick advised us fentanyl killed his 39-year-old son and added, “The fentanyl disaster on this nation have to be taken extra critically. It appears it’s simply flowing over the borders and nothing is being accomplished about it. We should do higher.”

We’re advised the Harrison household held a non-public funeral Wednesday in Las Vegas with shut pals.