Sultan Bolkiah's victory over
Sulu and
Seludong (modern day
Manila), as well as his marriages to Laila Mecanai the daughter of
Sulu Sultan Amir Ul-Ombra (an uncle of Sharifa Mahandun married to Nakhoda Angging or Maharaja Anddin of Sulu), and to the daughter of Datu Kemin, widened Brunei's influence in the
Philippines. This increased Brunei's wealth as well as extended Islamic teachings in the region. The influence and power of Brunei reached its climax during the reign of Sultan Bolkiah. Known as the "Singing Captain" (Nakhoda Ragam)[
citation needed], his dominion reached faraway Selurong, now known as the city of
Manila. Due to
overpopulation, he allowed his peoples to venture out of Brunei migrating into North
Borneo and to the Sulu (Solook). When visiting the islands, he would plant a speck of pepper into their beaches upon arrival and name some of them, to name a few, as Sitangkay,
Siganggang, Simunol, etc. His dominion also reached Bulungan (North Borneo) to
Johore (
Singapore[
vague]), that Brunei, its ancient name was Bulungan Johore[
vague]. His father-in-law, Sulu Sultan Amir Ul-Ombra (Amir Ul-Umara), also known as the Sultan Bolkiah of Sulu, recovered Bulungan-North Borneo back for him during a
Kalimantan revolt in Southern Borneo.