• He is with Maren (80) on the 1859 William Tapscott ship register. He appears as Rasmus Yenson on the Neslen Company roster in the Deseret News. His parents are listed in the parish register and Jens Nielsen and Karen Poulsen. 

Robert F. Neslen Company (1859)

• Age at Departure: 35

Sources

• 1860 Utah Census, Cache County.
• 1870 Utah Census.
• 1880 Utah Census.
• European Mission emigration records, Scandinavian Mission, 1852-1920.
• "Latter Day Saints' Immigration," Deseret News, 24 August 1859, 197.
• Parish Register of Farum, Fredericksborg, Denmark