**Wilhelm IV, Landgrave of Hesse-Kassel: A Human Design Perspective**

Wilhelm IV, also known as William the Wise (German: Wilhelm der Weise), was a prominent German astronomer and the first Landgrave of the Landgraviate of Hesse-Kassel (or Hesse-Cassel). Born on June 24, 1532, in Kassel, Germany, he was the eldest son of Landgrave Philipp the Magnanimous and Christina of Saxony. Following his father’s death in 1567, the Landgraviate of Hesse was divided among Philipp’s four sons, with Wilhelm receiving the portion centered around Kassel.

As a Projector in Human Design, Wilhelm IV possessed a unique ability to guide and direct others, which aligned with his role as a leader and pioneer in astronomical research. His Mental Authority meant that he thrived on intellectual engagement and required the right invitations to share his insights. This strategic approach likely contributed to his significant contributions to astronomy, including the creation of the Hessian star catalogue, which documented around a thousand stars and solidified his legacy in the field.

Wilhelm’s Profile as a 4/1 indicates a blend of networking and foundational stability. He was known for establishing strong connections and building a lasting lineage, as evidenced by his marriage to Sabine of Württemberg, with whom he had eleven children. His Incarnation Cross, the Juxtaposition Cross of Extremes (15/10 | 17/18), suggests a life marked by contrasts and the ability to navigate life’s complexities, which may have influenced his scientific inquiries and personal relationships.

Wilhelm IV’s channels, particularly the 64-47, highlight his capacity for mental clarity and the processing of experiences, further enhancing his intellectual pursuits. He passed away on August 25, 1592, at the age of 60, leaving behind a legacy that continues to resonate in both the realms of astronomy and nobility.

For more detailed information, you can view his [Wikipedia biography](https://en.wikipedia.org/wiki/Wilhelm_IV,_Landgrave_of_Hesse-Kassel).