After writing my 11th ebook, it is much more fun to think that I am a bloodline descendant of Charlemagne and Emperor Flavius Theodosius of Rome | Timeline. Rafael A. Vilagut is a mechanical engineer and digital entrepreneur who during pandemic times SARS-CoV-2 also has been involved in digital mining since 2020, after following the market and its potential for several years. My engineering and finance background at Simon Bolivar University in Venezuela, and Oxford University in the UK, has allowed me to work in the field of manufacturing facilities, tourism, building, automotive, oil & gas, and steel industries. I have ended up with an in-depth knowledge of international trading and arbitrage. This made me a subject matter expert in all kinds of manufacturing facilities and trading marketplaces. I utilized my knowledge of industry best practices, internal controls, and process improvements to make these companies better. Manufacturing is a very dynamic world where I need to wear multiple hats, leading people, organizing machinery and procedures, and making sure that all gear is efficient and safe. I have done this, it is fun and I have been rewarded multiple times at National Oilwell at Maracaibo, SHELL at La Victoria, Valencia and Puerto Cabello, PDVSA in London and Paris, Costa Rica National Oil Refinery and RECOPE-Soresco in Central America and China, among many others. I held increasing responsibility positions in production, logistics, and technical fields. Lately, energy trading and crypto is my passion because in this field I used my creativity and innovation the most. The complexity of the interconnected world both in globalization last century and deglobalization taking place since the pandemic always generated challenges that motivated me very much to be a better person every day. My experience as an effective communicator has been at all levels because my responsibilities included presenting results to Senior Management and Board Committees of PDVSA in Venezuela and all over the world. This is why I have accomplished publishing 11 ebooks at Kindle-Amazon and the blog Feliz y Saludable since 2009. Learning languages started as a hobby in my college time at Crane Lake Camp in the town of West Stockbridge, MA; Carleton University in Ottawa and Georgia Tech in Atlanta GA, and it has been a tremendous asset for my international career in Europe, Asia, the Americas, and the Caribbean. No matter how busy I am in my daily routines, I always find time to share with my family and friends, read, write, teach and learn. The Lineage of the Portuguese Conquerors of the 16th-century: Long-Term Genealogical Research from the Late Antiquity to the Contemporary Age by Rafael Alberto Vilagut focuses on two Portuguese conquerors and peacemakers, also settlers, Capitão Antônio Álvarez Pereira and Alférez (Ensing) Álvaro de Acuña (da Cuhna) who arrived in Costa Rica at the beginning of the 16th century, and with abundant descendants, including my maternal family Vega-Rodríguez. In this NEW ebook, I present 1200 years of family history which I refer to as Long-Term Genealogical Research. San Jose Costa Rica, Happy and Healthy, December 24, 2022.