Remembrance is a word-name. It has various senses, but the main meanings are "keepsake, souvenir" or "memorial". The two links below give more specific information on the origins and meaning of the word.
http://www.answers.com/remembrancehttp://www.etymonline.com/index.php?term=remember
I've never heard of it being used as a name before, but there are quite a lot of once-off word names out there. They were more common in earlier centuries, particularly amongst Puritan families.
♦ Chrisell ♦
All we have to decide is what to do with the time that is given us. - J.R.R. Tolkien.