Complex sentence: However, recent research presents him as a consistent and careful speller with very few language errors, and based on this reinterpretation of his language skills, the different ways he spelled his own name has led to a hypothesis that there were two runemasters named Öpir.
Split into simpler sentences: However, recent research presents him as a consistent and careful speller with very few language errors. The different ways he spelled his own name has led to a hypothesis that there were two runemasters named Öpir.