Complex sentence: There are some two hundred examples of this identified, often of two-character surnames, but few have suboobs, this was also a common origin with close to 500 or 600 examples, 200 of which are two-character surnames.
Split into simpler sentences: There are some two hundred examples of this identified, often of two-character surnames, but few have survived to the present. Like the previous example, this was also a common origin with close to 500 or 600 examples, 200 of which are two-character surnames.