Guillermo and Mary-Ann both accepted Christ as their Lord at a young age and both had several opportunities to serve in short term missions trips. God placed a strong desire for missions in both their hearts and the call to become missionaries became clear to both of them. It was during a one-year mission trip that they met and in 2000 they were married.
After Guillermo graduated from a missionary aviation program they served together in Africa and had great experiences learning a new culture and developing relationships. Serving In Mission accepted Guillermo and Mary-Ann as members and in 2008 went to Zambia as long-term missionaries. Guillermo works for Flying Mission and Mary-Anne works with the mission in administration, as well as teaching English to local Zambian ladies. They are both involved in the local church and hospitality. Guillermo and Mary-Ann have three children: Samuel (born 2006), Lavinia (born 2008) and Joshua (born 2011).