William Leatham, father of Louis Salisbury Leatham, was born in 1844 in Garthamlock, Lanark, Scotland and, as a Mormon convert, immigrated to Salt Lake City. He married Martha Ann Salisbury in 1885 and died in 1929.

Joshua Salisbury (1827-1913) was the son of Thomas Salisbury and Sarah Jones of Llanasa, Flintshire, North Wales. He married (1) Martha Davies (d.1857) in 1850 at Llanassa. They became members of the Church of Jesus Christ of Latter-day Saints in 1852. They emigrated to America and while living in Perry Co., Ill. she died. He married (2) Elizabeth Hoskin, daughter of James Hoskin and Elizabeth Hancock of Cornwall, England in 1858. They crossed the plains and settled at Wellsville located in Cache Valley, Utah in 1860. They raised a family of ten children. Several generations of descendants are given, along with information concerning their family's origins in Wales.

This ten-year supplement lists 10,000 titles acquired by the Library of Congress since 1976--this extraordinary number reflecting the phenomenal growth of interest in genealogy since the publication of Roots. An index of secondary names contains about 8,500 entries, and a geographical index lists family locations when mentioned.

Robert Letham (1801-1860) married Janet Urquhart in 1822, and they lived in Barony Parish, Glasgow County, Scotland. They had twelve children (two of whom died as children). Nine of the surviving children became Mormon converts, and eight of these immigrated to Utah on various occasions between 1849 and 1971. Of the two who stayed in Scotland (a brother and sister), one was a Mormon convert. Descendants in Utah changed the spelling of the surname to Leatham, and lived in Utah, Idaho, Minnesota, Nevada, Oregon and elsewhere. The book also traces some descendants and relatives of those who remained in Scotland, as well as ancestry to about 1650 A.D.