Scottish Family Names TV Series From About The 19080s, A Family With Grey Stripes In Their Hair?

TV series from about the 19080s, a family with grey stripes in their hair? - scottish family names

My mother used to rest until she discovers what has been called for this program.
she thought it was a historical drama about the system in 1800, and were perhaps a Scottish family? She believes that the name starts with "M"
Please help is annoying for both of you!