Were there any Sikhs in Sindh before 1947? If yes, then in which part of Sindh?

Sindh had a great influence on Sikhism. A great portion of Hindu Sindhis is Sikhs even today. Guru Granth Sahib is our holy book, similar to Geeta. Most of the temples of Sindhi community has this holy book kept with respect and fervor. It is studied, chanted and used for rituals on social occasions.
In many a family, the elder son was made Khalsa, i.e. with all the attributes of a Sikh like full hair, etc. One of my maternal uncles was a Khalsa, while we are Chaudhari Sikhs( with no hair or turban or beard).
Sikhs were distributed all over Sindh.