72 years old.
Eddie Cahill is 39 years old (birthdate: January 15, 1978).
Chris Cahill is 26 years old (birthdate: December 25, 1984).
Trevor Cahill is 23 years old (birthdate: March 1, 1988).
Australian footballer Tim Cahill is 38 years old (birthdate: December 6, 1979).
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Thomas Cahill was born on December 25, 1864 and died on September 29, 1951. Thomas Cahill would have been 86 years old at the time of death or 150 years old today.
Thomas Cahill died on September 29, 1951 at the age of 86.
William T. Cahill was born on June 25, 1912 and died on July 1, 1996. William T. Cahill would have been 84 years old at the time of death or 103 years old today.
William T. Cahill died on July 1, 1996 at the age of 84.
According to The 39 Clues: Vespers Rising, Jane Cahill was the youngest daughter of Olivia and Gideon Cahill at 10 years old in 1507, the year that the Cahill home was burned down, Gideon was killed, and the Cahill family was scattered across the globe. If you do the math, then, Jane Cahill would've been born in the year 1497.
Dan Cahill, the main character in "The 39 Clues" book series, is 11 years old in the first book, "The Maze of Bones."
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