I found a record for a marriage on 14 Feb 1906 of Frank Nicholson b. 1861 and Mary Nickler b. 1889. This was in Springfield Twp. Fayette Couny, PA His parents are William and Catherine Nicholson and her father is Benjamin Nicker (mother unknown).
This comes close to the Franklin in our family except he was born in 1851 not 1861 and I don't know who our Franklin married.