Tiglao is a full Filipino surname, usually given to legends. You can find this clan in some parts of Batangas, Tarlac, Pampanga, Pangasinan, & on San Mateo.
Members of this clan can also be found in countries all over the world including Guam, Germany, France, Turkey, Poland, Spain, Italy, Kuwait, Syria, Norway, Singapore, England, Greece, and the United States.
References
Tiglao Wikipedia(Text) CC BY-SA