The spelling of the phrase "wert the trail of" is derived from Old English and is pronounced as /wɜrt ðə treɪl əv/. It is typically used to indicate the worth or value of following a particular trail or path. The word "wert" comes from the archaic second person singular of the verb "to be" and "trail" is a common English word referring to a path or track. The spelling of this phrase is a reflection of the diversity and richness of the English language, which is influenced by various languages and eras.