Question

I am related to Samuel Dinwiddie 1733 - 1783. Am I also related to Robert Dinwiddie 1693-1770?

Answer 1

Welcome to Wikitree, Robert!

Is this your Samuel Dinwiddie?

https://www.wikitree.com/wiki/Dunwiddie-18

If not, use the search box at the top of your profile to search for your family. You can search for individual names or use the wild card * in the first name field to search for anyone with that surname. Then narrow your results by date or location. Give that a try and come back here to the forum if you have any questions.

Good to have you aboard!

Answer 2

If it is, it does not look like there is any known relationship to Robert Dinwiddie (ca. 1693-1770), who is located at:

https://www.wikitree.com/wiki/Dinwiddie-63

Samuel is from County Antrim, Ireland and Robert was born in Glasgow, Scotland.  There may be a relationship, but you'd have to develop the ancestry of both.