Dunbar Fitzsimmons Mackay Madden Connections IN India

Do these liasons in India circa mid 1800s-1950 ring a bell?

1. Robert DUNBAR
2. William Denis or Denis William DUNBAR and Sarah Ann FITZSIMMONS (1847-1912) m. abt 1870s
3. Mary Josephine DUNBAR (1873-1946) m. Patrick MACKAY (b. 1858 - father James Patrick) m. in 1890
4. Robert Ellesmere DUNBAR (1876-1932)
m. (i) Lena Helen Mabel ROBERTSON in 1903
(ii) Hester Caroline MADDEN in abt 1910
wives were 1st cousins - ROBERTSON Grandparents

Particularly interested in info re Nos.1,2 & 3.