Given the task definition and input, reply with output. In this task, you are given a question. You have to answer the question based on your information.

Danielle Ryan (born 1983) is an Irish heiress, being the daughter of Capt. Cathal Ryan and granddaughter of Tony Ryan,  co-founder of Ryanair with Christy Ryan and Liam Lonergan, and founder of GPA, which is an acronym for ?
Guinness Peat Aviation