Complex sentence: Johann Nepomuk Hiedler (also known as Johann Nepomuk Hüttler) was named after a Bohemian saint, Johann von Nepomuk, an important saint for Bohemians of both German and Czech ethnicity.
Split into simpler sentences: Johann Nepomuk Hiedler (also known as Johann Nepomuk Hüttler) was named after a Bohemian saint, Johann von Nepomuk. However, Johann von Pomuk/Johann Nepomuk was an important saint for Bohemians of both German and Czech ethnicity.