Complex sentence: In his youth he is said to have travelled extensively: his family allegedly to Somaliland before going on to America (presumably the USA), and when he reached his teenage years, he led a globetrotting and adventurous life.
Split into simpler sentences: In his youth he is said to have travelled extensively. His family is said to have gone to Somaliland before going on to America (presumably the USA), and when he reached his teenage years, he is said to have led a globetrotting and adventurous life.