Luisa Pimentel Ejército, commonly known as Dra. Loi Ejército, is a Filipino politician and physician who last served as a Senator of the Philippines from 2001 to 2007. She is the wife of former Philippine President Joseph Ejercito Estrada, and was the twelfth First Spouse of the Philippines from 1998 to 2001. Her son, Jinggoy Ejercito Estrada, is an incumbent senator since 2022 and previously from 2004 to 2016.

Joseph Ejercito Estrada, also known by the nickname Erap, is a Filipino politician and former actor. He served as the 13th President of the Philippines from 1998 to 2001, the 9th Vice President of the Philippines from 1992 to 1998, and the 26th Mayor of the City of Manila, the country's capital, from 2013 to 2019. In 2001, he became the first Chief Executive in Asia to be formally impeached and resigned from power. At the age of 87, he is currently the oldest living former Philippine President.