Names that once sounded more at home at a retirement party are showing up in nurseries again. Parents are rediscovering grandpa names with sturdy sounds, long histories, and easy nicknames, turning yesterday’s Walter or Arthur into today’s baby-name contender. The trend is not simply about nostalgia, either, because several old-fashioned choices have climbed noticeably in U.S. popularity rankings. For families overwhelmed by invented spellings or ultra-modern choices, looking back a few generations can provide surprisingly fresh inspiration.