The 17-year-old winger came on as a second-half substitute in a pre-World Cup friendly win over New Zealand.
After England’s 1-0 victory at Raymond James Stadium, Bellingham led the dressing-room celebrations, presenting Ngumoha with his cap before offering a glowing endorsement of his future.
"Congratulations on an amazing debut. I think we all enjoyed watching it, and obviously you're going to have a really bright future at your club and hopefully with us as well. It's a pleasure to give it (the cap) to you because I know there'll be so many more. So, congratulations," said Bellingham.
Ngumoha offered a brief but heartfelt response to England’s senior squad after receiving his first cap, saying: “Thank you everyone. I’m happy. I’m speechless! I just want to say thank you. We keep going!”