The -fyn element that appears in the old Merfyn name means "famous" where even "Friend of the Sea". Marvin is a discreet and observant man. He always takes his time before making a choice, and he knows foresee all eventualities. That it is very useful because Marvin is rarely wrong, advancing slowly but surely. This is a wise and reasonable man, in which you'll find advice when needed. In professional life, he will show conscious colleagues and listen to them. This could lead to positions of responsibility or representation.