Definition from Wiktionary, the free dictionary
birthmarked (not comparable)
- Having a birthmark.
- 1934, George Orwell, Burmese Days, Chapter 6, 
- Flory was standing against the veranda rail, half facing the girl, but keeping his birthmarked cheek hidden.
2009 April 26, Victoria Redel, “Dangerously Close”, in New York Times:
- In death, Reuben, with his birthmarked red face, is finally more ferociously alive to his father than he ever was as a boy struggling to fit in.
- 1934, George Orwell, Burmese Days, Chapter 6,