The earliest birth for a Maple that I could find in the
UK (specifically, England) was in the 18th century. There are periodic occurrences of it from then until recently, but only three in the last 20 years. It's very rare, has been used on both men and women. and usages may not be from the tree but from the surname, or from misspellings of
Mabel - transcription of parish records is quite unreliable.
No hits for Mapelin at all, although Maplin is in use here as a surname.