Complex sentence: Six generations after Oppenheim, the founding stallion of the modern breed, Aldrup Menkedal (known in some sources as Oldrup Munkedal), was foaled; most Jutlands in existence today can be traced back to two of his sons, Hovding and Prins af Jylland.
Split into simpler sentences: Six generations after Oppenheim, the founding stallion of the modern breed, Aldrup Menkedal (known in some sources as Oldrup Munkedal), was foaled. Most Jutlands in existence today can be traced back to two of his sons, Hovding and Prins af Jylland.