Question: Guinness Peat Aviation (GPA) was a Commercial Aircraft Sales and Leasing company set up in 1975 by Aer Lingus, the Guinness Peat Group, and Tony Ryan, he was a founder of Guinness Peat Aviation (GPA) as well as co-founder of Ryanair, with Christy Ryan and who?
Sentence (from "Tony Ryan"): Ryanair was believed to be the main source of his wealth in later life: the company is now one of the biggest airlines in Europe and is valued at over 10 billion US dollars as of 2012.
Relevant evidence: No