Regrettably, the existing time series data does not reach back to the era of the Ulster Plantation. Parish records from earlier periods are frequently unreliable due to inadequate maintenance, loss over time, or deliberate destruction. It isn't until the period between 1680 and 1700 that we start to discern patterns resembling the distributions evident in the 19th century. Despite the limitations of these registers, they still provide valuable insights. • - Early parish registers are often incomplete due to lack of maintenance or loss over time. • - Distributions become remarkably consistent from era to era by the 18th century. • - The region surrounding Glasgow has long been established as a surname homeland, likely due to its proximity to the parishes of New and Old Kilpatrick. • - The clustering of Kilpatrick and Kirkpatrick surnames in Dunbartonshire may be attributed to recording errors or independent origins, given the common usage of both the "Kil" and "Kirk" prefixes in the area. • - The absence of the Kilpatrick surname in Galloway is notable, while Kirkpatrick is prominent. Place names, villages, counties, parishes, and landscape features consistently utilize the "Kirk" prefix. • - There is a strong association between the Kilpatrick and Colquhoun surnames. The parishes of Old and New Kilpatrick, along with the clan territory, form a reasonably contiguous area. The presence of numerous Colquhouns in DNA results aligns with the historic significance of these families in the region.