Ladoga

Captain Ladoga is a famous pirate captain who was able to travel as far as the New World. At the end of his journey, he hid his treasure on Swallow Island.

Personality
Nothing is known about his personality, aside from the fact that he used to be a pirate.

Past
At some point in the past, Ladoga was a famous pirate exploring the Grand Line. He traveled as far as the New World, but eventually retired. During his retirement, he hid his treasure on Swallow Island, leaving a letter on another island as proof.

After his death, rumors about his treasure spread. However, residents of Swallow Island didn't believe his treasure truly existed, and its existence was eventually considered to be fake.

Some time after returning to Swallow Island, Wolf stumbled onto Ladoga's treasure. He recognized what it was, and used the money to build the Invincible Hanamaru.

One Piece novel Law
During Artur Bacca's travels as a pirate, he stumbled upon the letter left by Ladoga. After verifying its validity, he connected it back to the stories he heard as a child, and returned to Swallow Island to retrieve the treasure. However, upon arriving, he discovered that Wolf had already taken the treasure.