OMS (d. 1828), a Spaniard, also known as Amise, Musa Sahib, Urns and Hommus, served in Maharaja Ranjit Singh`s army. As a young man, he had enlisted in Napoleon`s artillery. After France`s defeat in 1815, he set out on his travels and reached Persia where he obtained employment declaring himself to be a Frenchman. He left Persia in 1824, reaching Lahore in 1826. He took up service under Maharaja Ranjit Sihgh on a salary of Rs 1,200 per month and was given command of two battalions of infantry and a regiment of cavalry.

ONKAR, generally written down as Oankar in Sikh Scriptural writings, is derived from the Upanisadic word Oankara (om+kara) originally signifying pronouncing or rendering into writing the syllable Om. Known as synonym of Om it has been used in the Vedic literature and, in particular in its religio philosophical texts known as the Upanisads, as a holy vocable of mystical signification and as the most sacred of the names of Brahman, the Supreme Self or the one entity which fills all space and time and which is the source of the whole universe including the gods themselves. The word om, the most hallowed name of Brahman, is derived, according to the Gopathabrdhmana (I. 24), from dp `to pervade` or from av `to protect`.
OTHIAN, a village 6 km north of Batala (31° 49`N, 75°12`E) in Gurdaspur district of the Punjab, is sacred to Guru Arjan, who halted here during his journey to Barath to see Baba Sri Chand. The Gurdwara commemorating his visit comprises a small domed octagonal Manji Sahib, with averandah in front and several ancillary rooms within a walled compound. The water of an old eightcornered well outside the compound is believed by the devotees to possess medicinal properties for curing certain diseases.
OCHTERLONY, SIR DAVID (1758-1825), soldier and diplomat, son of David Ochterlony, was born at Boston, Massachusetts, on 12 February 1758. In 1777, he joined the service of the East India Company as a cadet. He served under Lord Lake in the battle of Delhi and was appointed British resident in 1803 at the court of Shah `Alam, emperor of Hindustan. In 1808, he was the garrison commander at Allahabad when he was ordered to advance to the Sutlej with a detachment to meet the Sikh troops in the cis Sutlej region. From 1809-14 he was agent to the Governor General at the Ludhiana Political Agency.