Maturin was the governor of the Caldos colony in 2370. He was a member of a humanoid species that had an upturned nose which transitioned into a ridge extending to the forehead.

As a child, he and his family visited Glamis Castle in Scotland on Earth. When he looked out across the Scottish Highlands, he immediately felt "as if he'd come home". Therefore he later moved to the colony, modeled after Scotland and later on even became its governor.

He was a good friend of Felisa Howard and participated in her funeral. (TNG: "Sub Rosa")

Maturin was played by actor Michael Keenan.