Jessie
JESS-ee
A Scottish name often treated as a pet form of Janet, with a long-standing association with grace and with John/Johanna in wider naming traditions.
Meaning
In the 19th-century name books, Jessie is described as a Scotch name, often used for Janet, and also as a name linked to Johanna. Because Janet ultimately comes from John and Johanna, the broader etymological field points back to the Hebrew root meaning “the Lord is gracious.” Some sources in your excerpts also gloss Jessie with the sense of “grace of the Lord,” reflecting that Christian-name tradition.
Origin
ScottishHebrewEnglishfeminine
Fun fact
One excerpt calls Jessie “their own particular name” of the Scots, noting it as especially characteristic in that tradition.