Short answers, pulled from the story.
Huldrych Zwingli, born on the 1st of January 1484 in Wildhaus, was a Swiss Christian theologian, musician, and leader of the Reformation in Switzerland. As people's priest of the Grossmünster in Zurich from 1519, he preached church reform, replaced the Mass with a new communion liturgy in 1525, and is counted as the founder of the Swiss Reformed churches.
Huldrych Zwingli died on the 11th of October 1531 on the battlefield near Kappel during the Second Kappel War, at the age of 47. He was among the roughly 500 casualties in a Zurich army of 3,500 men that met a Five States force nearly double its size, in a battle that lasted less than one hour.
The Affair of the Sausages took place on the 9th of March 1522, when Zwingli and about a dozen others deliberately broke the Lenten fast by sharing two smoked sausages in Christoph Froschauer's workshop. The event, known as the Wurstessen, is considered the start of the Reformation in Switzerland, and Zwingli defended it in a sermon published on the 16th of April 1522.
Zwingli and Luther agreed on fourteen of the fifteen Marburg Articles in early October 1529 but split over the presence of Christ in the eucharist. Luther held that Christ's body was present in, with, and under the bread, while Zwingli argued that Christ had ascended to heaven and the Supper was a memorial, saying credere est edere, to believe is to eat.
Zwingli clashed with the Anabaptists led by Conrad Grebel, who rejected infant baptism and performed the first recorded adult baptisms on the 21st of January 1525. After the Zurich council issued a mandate on the 7th of March 1526 making rebaptism punishable by death, Felix Manz was drowned in the Limmat on the 5th of January 1527 as the first Anabaptist martyr.
Zwingli enjoyed music and could play the violin, harp, flute, dulcimer, and hunting horn, and his enemies mocked him as the evangelical lute-player and fifer. Three of his songs survive, including the Pestlied, an adaptation of Psalm 65, and the Kappeler Lied, yet he eliminated instrumental music from church worship because he believed God had not commanded it.
Zwingli is often called, after Martin Luther and John Calvin, the Third Man of the Reformation. Although his name is not widely recognised and the Reformed Churches ultimately adopted Calvin's view of the eucharist rather than his own, his legacy lives on in the confessions, liturgy, and church orders of the Reformed churches of today.