Date of Birth: 
About Guillermo Echevarría
- Guillermo Echevarría Pérez (born 13 May 1948 in Mexico City) is a Mexican former swimmer who competed in the 1964 Summer Olympics and in the 1968 Summer Olympics.
- He briefly held the world record in the 1500 meter (long course), breaking Mike Burton's record in 1968 before Burton took the record back 2 months later.
Read more at Wikipedia