Samuel Wyld very likely was born in Lancashire, England sometime in the mid 1660s. In addition to being a noted Mason and a professional surveyor, Mr. Wyld also earned a modest livelihood from a small estate. Mr. Wyld trusted his fellow countrymen more than foreign surveyors, being more likely to rely on the work of Norwood than that of Riccoli and Girmaldi. He was one of the first surveyors to recognize the brilliance of instrument maker Jonathan Sisson, inventor of the modern theodolite, wye level, and stadia lines. It is only to be speculated that some of Mr. Sisson's success was due to his association with Wyld.