Names that mean 5:
Cinco - five or 5th born in spanish
Shecayah - Five crows in native american
Quintero - Spanish for 5 Other similar ones - Quint/Quincy/Quintin/Quinton/Quintus/Quenton/Quentin/Quito
Taurus - Bull star sign for may - fifth month - also Bevis, Fermin, Farley, Manasseh, Fairley, Kyland, Farlow,Toro

Names that mean 7:
Ashwin - Seventh hindi month
Rangsey -Seven colours Cambodian
Septimus - Latin for Seven
Shichiro/Shichirou - Seventh Son in Japanese
Doctor - 7th son of the 7th son
Gabriel - one of seven archangels
Raphael - one of seven archangels
Uriel - one of seven archangels
Zimri - Name of a king in Israel that ruled for seven days
Julius/Julian (similar to July being the seventh month)
Vincent - as in Crabbe from Harry Potter - the crab being the sign for Cancer, star sign for July the seventh month (too tenuous a connection maybe lol!)

Names that mean end
Edge - border/end of a surface
Townsend - from the end of town
Penrice - from the end of the ford
Penrose - from the end or top of the moor
Pollard - end of the pool

Or the opposite of end:
Ananta - infinite/endless is sanskrit
Phoenix - as in the bird

Or what about a new beginning:
Navin
Neo
Raanan

All thanks to google lol. Will have to think some more