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The Trent Family is not to be confused with the original Cahill Family. Dan and Amy's father's last name is Trent, but he chose to accept his wife's maiden name of Cahill for their children's last names. This may have been because Madrigals usually take their mother's name instead of their fathers in honor of Madeleine Cahill. Arthur Trent was a Vesper sent to spy on and capture Hope Cahill but fell in love with her and betrayed the Vespers to become a Cahill and marry Hope Cahill. Arthur Trent was the only non-Cahill that knew about the search for the 39 Clues before he married a Cahill. Unfortunately, Arthur Trent was never granted a full Madrigal status. He also for some reason, kept the last name Trent instead of changing his name to his wife's maiden name but there are mostly Madrigals.

Family Members

• Dan Cahill - Main Protagonist.

• Amy Cahill - Main Protagonist.

• Hope Cahill - Dan and Amy's mother (deceased) (Trent family by law)

• Arthur Trent - Dan and Amy's father (possibly deceased)

• Grace Cahill - Dan and Amy's grandmother (deceased) (Trent family by law)

• Beatrice Cahill - Dan and Amy's great-aunt (Trent family by law)

• Fiske Cahill - Dan and Amy's great-uncle and guardian (Trent family by law)

• James Cahill - Dan and Amy's great-grandfather (deceased) (Trent family by law)

• Edith Cahill - Dan and Amy's great-grandmother (deceased) (Trent family by law)

• Saladin - Grace's beloved cat that Amy and Dan adopted.

• Shep Trent - Dan and Amy's uncle.

For the whole Trent Family, click here.

The Trent's Alliances

• The Trent's Alliances

Slideshow

• Amy and Dan on the back cover of One Flase Note
• Amy and Dan on the back of The Sword Thief
• Amy and Dan on the back cover of The Maze of Bones
• Card 427: The Embassy
• Hope Cahill and Arthur Trent's graves
• Grace Cahill
• Fiske Cahill in his yearbook
• Saladin

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