Credit: Nick Jonas on Instagram

The Jonas Brothers fan pool has lost one of its staunchest members. The boys’ grandfather passed away yesterday (January 28).

Nick, Joe, and Kevin shared the sad news earlier today.

“Yesterday I lost a best friend. A mentor. A ray if [sic] light, and the best grandfather anyone could ever ask for. I love you papa and will miss you very much,” Nick wrote on his Instagram alongside a sweet photo of himself and Papa Jonas.

Credit: Joe Jonas on Instagram

Kevin shared a similar sentiment in a January 29 tweet: “Yesterday was very hard we lost one of the greatest men I ever knew. Papa you will always be with us.”

Joe posted a photo of the brothers’ grandfather from earlier days. “The funniest guy in any room. The knowledge he had. The epic life he lived. Thank you for teaching me so much. I am going to miss you. One of my Heros. Rest in Piece [sic] Papa,” he captioned a black and white image of the handsome young man perched on top of a slick looking car. We see where the boys get their good looks!

Thankfully, the family has some happy news on the horizon. Kevin and wife Danielle are just days away from welcoming their baby daughter on Dani’s rumored due date of February 6. We hope the arrival of the little bundle of joy will help the whole family move forward after their recent loss.

SourcesNick Jonas on InstagramKevin Jonas on TwitterJoe Jonas on Instagram

Elisabeth Kramer is an Assistant Editor at Wetpaint Entertainment and our resident Downton Abbey expert. Follow her on Twitter and Google+!