My Family Tree is Stewart Paternal and Clark Maternal of Glasgow Scotland

I have started researching my Family Tree after stumbling over 2 cousins that I or any of the family I am in contact with knew about.
I have not got a complete list of names or event dates, but I have managed to get as far as my Great Grand Parents on my fathers side and to my Great, Great Grand Parents on my mothers side. Apart from one Aunt who went to America and a Cousin who went to Canada, the vast majority of family memebers are or have lived in Glasgow, Scotland, although my Great Grandfather, Benjamin Stewart (who was a Dentist)and his wife Jane married and lived in Edinburgh during the 1850's at the addresses 44 India Place and later at 12 Howe Street.

Benjamin died before his son Alexander's Marriage in 1876 (although I do not have exact dates yet) and Jane remarried, becoming a McGerm (or something very similar).
Jane's father is mentioned on their marriage details as the late Robert Watson, farmer, Arbuthnott. but I have not been able to find anything more on him.

I am happy to communicate with or answer questions from anyone who may know something or feels they may have a connection.