which translates as :
“Flourishing both in sunshine and shade”
which is the Irving clan family motto, as my sister has reminded me thanks to a trip she took in the summer to visit our Uncle Ken and Aunt Margaret. (see this for a Irving Clan History)
Hopefully the new year brings a bit more sun (please 🙂 )
You might find the above website helpful in your research into the history of the Irvings & Irvines in Scotland.