Upon my request , our host sought some facts about of Mohlian Mohalla inside Suttar Mandi of old city lahore.They came out with following report, which is more less same as given in Wikipedia
The origins of the original Lahore may be as early as 2,000 B.C.E. Lahore had many names throughout its history. Mohallah Maulian (मोहल्लाह मौलियन ) represents one of the two most probable sites of the original Lahore। The other, Suttar Mandi (the yarn market) inside Lohari Gate, had been called Mohallah Chaileywala Hammam located in Machli Hatta Gulzar, just off Chowk Chalka, Lahore's original red-light area.
Maybe our ancestors became known as Mohla instead of Misr(which was generic name for brahmans) due to their dominance of this area (मोहल्लाह मौलियन ) especially on their return from Para Chinar along with Raja Ranjit Singh. It is alleged by present Lahoris that during his regime Hindus and Sikhs dominated the city. They hardly built new structures instead, ravaged and destroyed several mosques and monuments of the old fort . They further believe that some of these establishments were used as Horse stable ( अस्तबल ).Quite possible, as all powerful Kings of those days were known for religious fanaticism or intolerance.
We know Our Greatest Grandfather Madho ramji was credited to have constructed a shivam temple hence earned the title or name of Mohla. It is pure conjecture and anybody's guess.It's for sure that Mohallah Maulian or Mohla Mohalla are one and the same; and that , a very old settlement of LAHORE.