Life as an only child was lonely for Marguerite “Peg” Koller. “I had to go outside to find kids to play with,” said Koller, 99, who grew up in Philadelphia, and now lives in Montgomery County, Penn. “I definitely wished I had siblings.” More than just a brother or sister, she longed for a large family. So when the time came for her to start her own brood, she went with a “more is more” mentality....