The Battle of Stadtlohn was fought on 6 August 1623 between the armies of Christian of Brunswick and of the Catholic League during the Thirty Years' War.
 The League's forces were led by Johann Tserclaes, Count of Tilly.
Below is a list of events that occurred first in Worcester, Massachusetts.
The Palatinate Campaign, or the Spanish conquest of the Palatinate, was a series of sieges, battles and conquests during the Palatinate Phase of the Thirty Years' War, carried out by the Army of Flanders under Don Ambrosio Spinola, and the Imperial-Spanish troops under Johann Tserclaes, Count of Tilly and Don Gonzalo de Córdoba.
 The Habsburg forces took advantage of Frederick of the Palatinate's predicament by invading the German Protestant Palatinate in 1620 and conquering it by the end of 1622.
Thomas "Tom" Fosmire joined the Central Intelligence Agency's Special Operations Group in the 1950s and was given responsibility (along with Tony Poe) in training Tibetan tribesmen to fight against the Chinese Communists in the early part of his career.
 The training occurred first at a base on Saipan in the Marianas islands but was later moved to a colder mountainous climate at Camp Hale, Colorado.
 One battalion was trained at Camp Peary, near Williamsburg, Virginia.
 After the Tibetan operation concluded, Fosmire landed with Tony Poe in Sumatra, Indonesia to supply and train mutinous forces there in an effort by the Eisenhower administration to destabilize the communist-leaning regime of Sukarno.
 He and Poe were evacuated from Sumatra by US Navy submarine when the troops they were training fled to the mountains.
 In the 1980s, Fosmire served in El Salvador and Honduras, training Nicaraguan rebel troops opposed to the Sandanista government.
Robert Blake was a Union Navy sailor during the American Civil War and a recipient of America's highest military decoration, the Medal of Honor.
 Blake was the second African American to perform a Medal of Honor action; William Harvey Carney was the first.
 Blake was the first African American to actually "receive" a Medal of Honor - his was presented to him in 1864, while Carney did not receive his until 1900.
 But, because Carney's Medal of Honor action occurred first, Carney, not Blake, is usually credited with being the first African American Medal of Honor recipient.
Johann Tserclaes, Count of Tilly (Dutch: "Johan t'Serclaes" ; February 1559 – 30 April 1632) was a field marshal who commanded the Catholic League's forces in the Thirty Years' War.
 He had a string of important victories against the Protestants but was then defeated by forces led by the King Gustavus Adolphus of Sweden.
 Along with Duke Albrecht von Wallenstein of Friedland and Mecklenburg, he was one of two chief commanders of the Holy Roman Empire’s forces in the first half of the war.
The Battle of Rain (also called the Battle of the River Lech or Battle of Lech) was fought on 15 April 1632 as part of the Thirty Years' War.
 The forces involved in this conflict were 40,000 Swedish troops under Gustavus Adolphus and 25,000 Catholic League troops under Johan Tserclaes, Count of Tilly.
 It was the second meeting between the two legendary generals (see First Breitenfeld when Tilly received the first setback of his long and storied career) and like at Breitenfeld, Tilly lost when Gustavus forced the river Lech under the cover of his superb artillery.
Alberto Octavio Tserclaes de Tilly (also known as Antonio) (1646 – 10 September 1715) was a Spanish general of Flemish origins, the grandson of a brother of General Johann Tserclaes Count of Tilly, who acquired fame in the Thirty Years War.
"Emmerdale" is a British soap opera first broadcast on 16 October 1972.
 The following is a list of characters that first appeared or will appear during 2015, by order of first appearance.
 All characters are introduced by the series producer Kate Oates.
 The first character to be introduced was Emma Barton in January.
 Nurse Darren Thompson arrived in March and Lachlan White's father, Donny Cairn arrived in April.
 The year's first birth, Moses Dingle, the son of Charity Tate and Ross Barton, occurred in June.
 Jermaine Bailey was also introduced during the same month.
 The second birth occurred in September as Vanessa Woodfield gave birth to her and Kirin Kotecha's child, Johnny Woodfield.
 Tess Harris, the woman whom Paddy Kirk had an affair with, also began appearing in September.
A sequence determination is a type of examination conducted by a forensic document examiner.
 This type of forensic examination is done in an attempt to determine which of two events occurred first in the preparation of a document.
 Another term used for this type of examination is "sequence of intersections" since the evaluation requires intersection of physical materials on the document.

Question: What occurred first, the Battle of Stadtlohn or the birth of Johann Tserclaes?
Answer: Johann Tserclaes