Professor Guillermo T. Magdamo was born on September, 9, 1892 in Barrio Tigayon, Kalibo, Aklan. He went to school in the early days of the American occupation in Kalibo through elementary school. For his high school education he had to go to the provincial capital, Capiz, in 1910 and to Silliman Institute in Dumaguete, Negros Oriental in 1913 to which he graduated in 1914.He proceeded to college earning an A.B. degree, with a Science Major, in 1916. He was a working student all throughout his early school days. He joined the teaching faculty at Silliman that year until he resigned four years later to go for graduate study in the United States. While at home on vacation before his departure he was entreated to postpone his trip to help a dying pioneer private high school- the Kalibo Institute. He stayed and brought it back to its feet.In 1923, after an absence of three years he was invited back to his Alma mater as an instructor in the College Department of Zoology. In 1934 he was one of the Silliman scholars at the University of the Philippines where he took graduate courses. He returned to Silliman with a B.S. degree and continued until he retired as head of the Biology Department in 1952. He was considered one of the mainstays of that department and, together with his mentor and colleague, Dr. James W. Chapman who retired in 1947, built it up from primitive beginnings to achieving recognition for its academic standards.
Retirement from Silliman did not stop his activity in the field of science and education. A young fledgling missionary college in Midsayap, Cotabato called on him to salvage it from near-closure. In April 1953, he was elected as Director of Southern Christian College. He accepted the challenge, came aboard as third Director of SCC for a term of 3 years. The Board recognized him for getting it on its feet, obtaining government recognition of the different academic programs, establishing relations with community, and making SCC self-supporting. It was during his time when the Bureau of Private Schools granted SCC a permit to offer the first and second years in junior normal and education, in the quarterly system and authorized it also to offer complete elementary grades (I-VI). The first quarter of the collegiate courses was offered during the summer of the year. He was reelected for another term. Before the end of his second term, he was requested to stay on until a suitable replacement could be found. When he finally ended his meritorious service and retired at SCC on April 15, 1960.
In 1966 during the 18th Foundation Anniversary of Southern Christian College, the Magdamos were honored with Distinguished Service Awards. Prof. Magdamo died in his home barrio in Tigayon, Kalibo, Aklan on July 1, 1972.