Wisnu, a common male name, Giring Ganesha, etc.), Muslims/Hindu/Buddhist with Christian sounding names (e.g. Kristiani Herrawati), or Buddhist/Hindu/Christian with Muslim/Arabic names (e.g. Sulaiman, Hassan, and other common Arabic names), as many Javanese (and Indonesians to a larger degree) took inspirations from various cultural sources. Some names even mix elements from different religious sources, such as "Wisnu Kristianto" (Wisnu from Vishnu, and Kristianto from Christian), "Muhammad Wisnu", etc. which makes them truly unique from anthropological's point of view. This naming system is especially prevalent from people living in metropolitan areas, or people with Javanese background, as Javanese names tend to be more liberal, while less prevalent in other cultures and regions where the majority of the people are still using traditional names and naming system, or where religion still play a very large emphasis on the daily lives. Nicknames It is uncommon, and considered rude, to refer to an Indonesian person by their full first name, unless that name has only one or two syllables. Former Indonesian president Abdurrahman Wahid, for example, had "Abdurrahman" shortened to "Dur". Many Indonesians use a different name altogether; a woman born as "Khadijah" may be known as "Ida" or "Ijah" to all her friends and family. In Sundanese culture it is common for the nickname to become integrated as the first name. For example, someone with the name "Komariah", "Gunawan", or "Suryana" written in their birth certificate may become known as "Kokom" for Komariah, "Gugun", or "Wawan" for Gunawan, and "Yaya" or "Nana" for Suryana. The result is rhyming names such as "Kokom Komariah", "Wawan Gunawan", and "Nana Suryana". Notable people having such names include politician Agum Gumelar, comedian Entis Sutisna (with stage name Sule'), and politician Dedi Mulyadi. Indonesian people might also take a Western style nickname such as Kevin, Kenny, Tommy (Tomi), Jimmy, Ricky, Dicky, Bob, Nicky, Nico, Susy, Taty, Lucy (Lusi), Nancy, Mary (Maria) and so on. It does not necessarily mean their names are Thomas (for Tommy) or James (for Jimmy). For instance, Suharto's son, Hutomo Mandalaputra is popularly known as "Tommy Suharto". The "Tommy" here was not derived from "Thomas", but from the Javanese name, "Hutomo". Noble titles as part of personal name In some ethnic groups it is common to include a nobility title into the formal personal name. Due to the various traditions of nobility in each ethnic group, it may be difficult for people from outside a