Hendrikus Albertus Lorentz (Oudewater

Oudewater

Oudewater is a municipality and a town in the Netherlands, in the province of Utrecht.-Population centres :The municipality of Oudewater consists of the following cities, towns, villages and/or districts: Hekendorp, Oudewater, Papekop, Snelrewaard....

, 18 September 1871 – Klerksdorp (South Africa), 2 September 1944) was a Dutch explorer in New Guinea

New Guinea

New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

 and diplomat in South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

.

Lorentz, son of a tobacco grower in East 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...

 who had returned to the Netherlands, studied law and biology at Utrecht University

Utrecht University

Utrecht University is a university in Utrecht, Netherlands. It is one of the oldest universities in the Netherlands and one of the largest in Europe. Established March 26, 1636, it had an enrollment of 29,082 students in 2008, and employed 8,614 faculty and staff, 570 of which are full professors....

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Lorentz participated in three expeditions to Dutch New Guinea, the present-day Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

n (western) portion of the island of New Guinea. The first expedition was in 1903, led by A. Wichmann. Lorentz led expeditions in 1907 and 1909-1910.

Lorentz National Park

Lorentz National Park

Lorentz National Park is located in the Indonesian province of Papua, formerly known as Irian Jaya . With an area of 25,056 km² , it is the largest national park in South-East Asia...

 and the Lorentz River

Lorentz River

The Lorentz River is located in Western New Guinea, Indonesia. It originates in the central east-west mountain range of New Guinea, and flows southwards into the Arafura Sea at Flamingo Bay. During the first two Dutch expeditions to Southern New Guinea it was called Northern River...

in New Guinea are named after him.