The same name is mentioned in the Book of Samuel. This Amminadab was a Levite and the son of Uzziel. He likely served in the tabernacle. He was one of 112 Levites who received the great honor of bringing the ark of the covenant, back to Jerusalem from the Philistines.
According to the Biblical genealogies, he was born of Ram (also known as Aram) during the Israelite exile in Ancient Egypt; Ram was the great-grandson of Judah. He was the father of Nahshon, chief of the tribe of Judah (Numbers 1:7; 2:3; 7:12, 17; 10:14). His daughter Elisheva was Aaron's wife (Exodus 6:23), making him Aaron's father-in-law.
Amminadab is one of the ancestors of Christ painted in the lunettes of the Sistine chapel.