Coenrad Laurens Coolen is one of the lay evangelists

Evangelism

Evangelism refers to the practice of relaying information about a particular set of beliefs to others who do not hold those beliefs. The term is often used in reference to Christianity....

 who did evangelical work in East Java

East Java

East Java is a province of Indonesia. It is located on the eastern part of the island of Java and includes neighboring Madura and islands to its east and to its north East Java is a province of Indonesia. It is located on the eastern part of the island of Java and includes neighboring Madura and...

. He did the evangelists in Java

Java

Java is an island of Indonesia. With a population of 135 million , it is the world's most populous island, and one of the most densely populated regions in the world. It is home to 60% of Indonesia's population. The Indonesian capital city, Jakarta, is in west Java...

 along with other lay Evangelists such as Kiai Ibrahim Tunggul Wulung, Paul Tosari

Paul Tosari

Paul Tosari was one Java evangelist based in Surabaya. He is known among the Christians of East Java. The existence of the Christian Church Jawi Wetan currently also not out of the job. Paul Tosari also known by many people outside the area because he was writing the lessons of religion in the form...

 and Johannes Emde

Johannes Emde

Johannes Emde was a German evangelist who worked in Indonesia. He became one of the founders of the churches in East Java. In Surabaya he was given the nickname of Saint Surabaya.- Biography :...

.

Biography

Coolen was born in Ungaran

Ungaran

Ungaran is the capital city in the Semarang Regency in the province of Central Java, Indonesia. Ungaran is located at -7.13972 , 110.405 at an elevation/altitude of meters. The average elevation of Ungaran, Indonesia is 319 meters...

 in 1773. His father was from Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

 and his mother was a daughter of Prince Kojaran of the noble family of Mataram

Central Java

Central Java is a province of Indonesia. The administrative capital is Semarang. It is one of six provinces on the island of Java.This province is the province of high Human Development in Indonesia and its Points Development Index countries is equivalent to Lebanon. The province of Central Java...

. Background education Coolen is ELS and he went into military service

Military service

Military service, in its simplest sense, is service by an individual or group in an army or other militia, whether as a chosen job or as a result of an involuntary draft . Some nations require a specific amount of military service from every citizen...

. His last assignment was in the artillery

Artillery

Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...

. In Surabaya

Surabaya

Surabaya is Indonesia's second-largest city with a population of over 2.7 million , and the capital of the province of East Java...

Coolen married a woman of English and had five children. After he moved from the Surabaya job as boss of Opzichter (sinder blandong) at Wirosobo (Mojoagung). In it he remarried to his servants the Sadiyah and had three children.