Stereotypical only because it is found in "Moby Dick," and the family of that name who settled on Nantucket. A well-known Brixton (England) family in the 16th C., but I haven't traced the genealogy.

It is a not uncommon English name. A few:
Sir Isaac Coffin, Baronet, and Royal Navy, 1812-1889.
Gen. Clifford Coffin, 1870-1959, Victoria Cross recipient in WW1, became a major general.
Walter Coffin, 1784-1867, coal mine owner, exploiter of Rhondda fields, member of Parliament.

One might as well pick the name of Seaman McGregor.