Sandiland Family

i am looking please for some information on the Sandiland family especially of interest is the
family of Robert Sandiland and Mary Cross.
I would also please like to find out something from i believe they had a daughter named Sarah and she has a brother i believe with a very unusual name beginning with the letter R.
It is probable that they come from Scotland but i believe Sarah was married in Scotland and then came to England
IM thinking that Sarah was born around circa 1727-1735
Any help be great
Thanks